IMO Given the harm they do, given all the trouble caused in the world by them they should be banned, but how? People have the right to believe what they will and worship as they see fit. These are human rights, but they turn people against people, spawn extremism and give their followers a false and divisive view of the world.
How could they be banned? How can these divisive, misleading, tribal, anachronistic dogmatic and destructive forces be done away with without the obvious cries of outrage.
We would have to tread very carefully. How could it be done? What would the first steps be.
I would suggest a piecemeal ban of various passages as a start. For example everything that stirs up hatred of another religion or violence towards another should be edited out.
Is it the case that we are powerless even to take the first step in this direction because of human rights and the good (far outweighed by the bad IMO) these religions sometimes do.
Can we really not sort this nonsense out?
My solution would be to ban all the holy books and just allow Genesis up to 9:19 (everything after that is just tribal self-interest but that is unrealistic and dictatorial.
What else could be done? Just keep in mind the thousands of lives that have been lost / ruined because of these divisive forces.