Got Questions is not a Calvinistic Protestant denomination. The views expressed in that article about the series of ‘Left Behind’ novels and films is not Calvinistic. Got Questions is a Christian ministry that uses the Internet to spread the gospel. Got Questions supports the pre-tribulational position and upholds the view that the events in Revelation should be interpreted literally and consistently and that “the pre-tribulational position is the most biblically-based interpretation.”
From what I understand from their site they take a Messianic approach whereby the rapture of God’s people on earth happens before Christ Jesus descends from heaven to literally sit on a throne in Jerusalem to rule the world for a literal thousand years.
The Bible tells us that when Christ returns to the earth He will establish Himself as king in Jerusalem, sitting on the throne of David (Luke 1:32–33). The unconditional covenants demand a literal, physical return of Christ to establish the kingdom. Source: https://www.gotquestions.org/millennium.html
They also believe that will result in a new temple in Jerusalem with a priesthood who will offer literal animal sacrifices.
Most premillennial scholars agree that the purpose of animal sacrifice during the millennial kingdom is memorial in nature. As the Lord’s Supper is a reminder of the death of Christ to the Church today, animal sacrifices will be a reminder during the millennial kingdom. To those born during the millennial kingdom, animal sacrifices will again be an object lesson. During that future time, righteousness and holiness will prevail, but those with earthly bodies will still have a sin nature, and there will be a need to teach about how offensive sin is to a holy and righteous God. Animal sacrifices will serve that purpose, "but in those sacrifices there is a reminder of sins year by year" (Hebrews 10:3). Source: https://www.gotquestions.org/millennial-sacrifices.html
However, Got Questions admits that the pre-tribulation view has flaws:
One perceived weakness of pretribulationism is its relatively recent development as a church doctrine, not having been formulated in detail until the early 1800s. Another weakness is that pretribulationism splits the return of Jesus Christ into two “phases”—the Rapture and the Second Coming—whereas the Bible does not clearly delineate any such phases. Source: https://www.gotquestions.org/pretribulationism.html
Are all the elect raptured before the Tribulation, according to Calvinists? Herein lies the danger of sticking labels onto Christians, especially when it comes to “Calvinists”. The views expressed by Got Questions are not necessarily the views held by most Christians who identify with Calvinism. The views expressed by Got Questions support a pre-tribulation rapture and a literal thousand year reign of Christ on earth. This is not based on “Calvinism”.
Calvin said the elect are kept, in faith, by the almighty power of God. The doctrine of the Perseverance of the Saints, or the Security of Believers, shows how the elect who are set apart by the Spirit and persevere to the end – those who are given true, living faith in Christ – are secure and safe in Him. They have been sealed with the Holy Spirit and have been given the guarantee of their salvation. Calvin had nothing to say about the elect being raptured prior to the Tribulation. Here are some Bible verses used in the book “The Five Points of Calvinism Defined, Defended, Documented –by David N. Steele and Curtis C. Thomas, pp 56-60 (published 1963):
I do not pray that thou should take them out of the world, but that thou should keep them from the evil one (John 17:15).
Since therefore we are now justified by his blood, much more shall we be saved by him from the wrath of God (Romans 5:8-10).
Who shall separate us from the love of Christ? Shall tribulation, or distress, or famine, or nakedness, or peril, or sword? As it is written, ‘For thy sake we are being killed all day long; we are regarded as sheep to be slaughtered” (Romans 8:35-39).
Were those first Christian saints, those of the elect, spared from trials and tribulations? No, they were not. Since the Church Age began (with the ascension of Christ Jesus to heaven) till Christ returns, with the angels, God’s people will continue to be persecuted and experience hardships. The promise is that the saints will be preserved, that they will not have to face the judgment of God. There is no mention of them being raptured during the Tribulation.
Associated with the relatively new teaching of the Rapture is ‘Dispensationalism’ - a theological system that emphasizes the literal interpretation of Bible prophecy, recognizes a distinction between Israel and the Church, and organizes the Bible into different dispensations or administrations. Dispensational theology was not formalized until John Nelson Darby began teaching it in the mid-1800s. Dispensational theology first became popular in the days of Cyrus Scofield with the publication of the Scofield Reference Bible in the early 1900s.
As others have pointed out in their answers to your question, most Reformed Protestant churches do not support a pre-millennial rapture of the saints prior to the Great Tribulation and the return of Christ Jesus. Neither do they support the idea of Christ returning to earth to rule from Jerusalem for 100,000 years with a revived priesthood, temple and animal sacrifices. Such ideas turned up some 300 years after John Calvin’s death and can not be attributed to him.