There is one recent poster who seems quite self-satisfied with their own total lack of observance.
There is a different poster who comes from a non-observant background and is interested in finding out more about Judaism.
Regardless of my personal opinion of these posters (I’ll just say that I believe significant respect is due the second), my concern is about either of these types of poster writing something here on Shabbos.
“…that would be such a pain for the mods to check everyones IP address“
True. My suggestion / request may not be practical or even feasible. I don’t even know if moderators can see the IP address of posts.
“And what about non-Jews? Are they not allowed to post (here) on Shabbos?“
I’d think that isn’t a problem, but I’ll defer a definitive opinion to those who are more knowledgeable than me.