This question is a follow-up to this answer. In this particular answer the biblical basis for baptism being non-requisite for salvation is given. Essentially it is a defense of the doctrine that you are saved by faith alone; baptism seen as an act outside of saving faith. The part of the answer that is the subject of this question is this:
what applied to circumcision (it follows salvation, which is by faith) applies to baptism
Colossians 2:11-12 is given as the basis for thinking of circumcision as foreshadowing baptism.
So my question is if what applied to circumcision applies to baptism, why are infants not baptized? If the answer is that infants can't be confirmed to be saved before infant baptism, then why is circumcision linked to baptism?
In order to be on topic this question must be directed at a specific group. So I ask this question of Protestant Evangelicals specifically since the article quoted in the answer that raised my question appears to be written by a Protestant Evangelical Christian (Matt Slick). Besides, most high church Protestants do practice infant baptism, so I think this question is confined to PE churches.
I did read some of the article by Mr. Slick, but I couldn't find an answer to this question there.