I think people take things way too seriously when it comes to this topic. People are multi-facet, and there's a time and a place for everything when it comes to expressing ourselves (this same logic applies both online and irl). I don't think it's fair for me to assume that the way people act online is how they act irl 24/7 - even here people seem to act a certain way in line with this site, but I don't think that's how they're like that all the time itl - it's just that this platform allows them to express a side of themselves that they normally can't anywhere else. That doesn't necessarily mean they're only one way - that's just how you've come to know or perceive them.
I think people who have trouble navigating the internet (as it is today) make it out to be worse than it really is - as they only view or experience it on a surface level. If you know where to look - you you can still find very small, nice and niche communities even on large mainstream platform - especially when it comes to art, hobbies, fandoms, entertainment, etc. It doesn't have to be all just doom and gloom, I think it's healthy to have an outlet for both the good, the bad and the ugly. It's much better than just bottling it up all the time imo.