I’m on the side of not having to hear about anyone’s religion. If you were in a park and Muslims approached your children you would be pissed right? You’re an Atheist when it comes to Islam right? You fully believe that they’re misguided and worship a false god right? You would be rightly angry if they tried to approach you with their false beliefs. And if they tried again after you warned them to stop what would you do?
All the above is the same way someone who isn’t Christian might feel if they were harassed by prosthelytizers. Or Mormons knocking on your door, or Jehovah’s witnesses, etc...
If you are, you are on the side of defeating the exercise of the freedom of speech in a Constitutional society, propriety or not. And that is not the general practice in these FR forums.
How they wish to feel is a personal inviolable characteristic of any society, free or repressive. What they choose to do about it is not. AFIK
Unfortunately, it’s not your place to silence the speech of others. My children having been hearing about Islam throughout their school careers.