Anyone reading the New Testament becomes aware that the early church would avoid practices that offended their brother, out of a spirit of love. For example, even if it was not technically wrong to eat meat purchased in a market, that might have been originally been a sacrifice to an idol, where it offended a brother's conscience, a believer should avoid exercising his freedom in love. This subject is described more fully here.
I am naturally interested in symbols and have posted a few questions about them. For example, here you can find discussion about how Jews hated every kind of human image, even on coins as 'graven images' were idolatry, if indicating any kind of power.
Also, I discovered that the modern halo can be traced back as far as ancient Canaanite and Babylonian Son worship. The brightness behind the head being the Sun. This was a common pagan symbol that seems to have been adopted by the ancient church around the fourth century AD. At first it was only depicted in art for the divine nature of Jesus and then various versions spread to many other objects such as esteemed saints and Mary, etc. For details one can refer here.
The question is, as these pagan traditions were so fully detestable by Jewish ethics, even possibly more than eating unclean meat, why such a aggressive introduction of so many things that would offend? I can only imagine that some Jewish Christians still existed in the 4th century. Besides, even today many, if not most, Protestant Christians are deeply troubled in their consciences over the practice of praying to Saints, using religious icons, etc. So why would Paul say avoid even meats that 'seemed unclean' due to idolatry, according to a weaker brothers faith, but in the fourth century anything and everything that might appear as joining a golden calf to the worship of God was not only no longer shunned but lovingly embraced? Without even questioning the actual ethics of the individual practices, and even generously and falsely pretending it is the weak conscience that is offended, still it begs the question: 'Why no longer care about a brother's conscience?'
Note: Please avoid condemning specifc practices, or justifying specific practices that are offensive to many Christians. My question is being raised at a higher level, which respects how a brother treats the offended. The actual offences are not central to this current question.