When doing risk analysis something that is required to keep people alive gets a few extra points towards being accessible for, hopefully, obvious reasons.
If even something that is necessary for life is controlled due to the danger it poses, you can imagine why people would seek to restrict dangerous things that people can live without.
Banning religion full stop is wrong and won't stop belief.
However, religion should not have any special protections that other groups do not get.
Religion should not exclude people from mandatory childhood vaccines, religion should not be a mitigating factor in vilification or defamation cases etc.
Because religion can be and has been used to convince people to do terrible things. The fewer false beliefs people hold the fewer things can be used to manipulate them in this way.
Christianity as a religion encourages fear and paranoia. None of this is accidental.