You've got excellent points here, without a doubt. I hadn't considered it, but it really does feel like more and more, spaces are being sanitized for the sake of being "for kids". Even if that wasn't the original intent.
I cynically wonder if that's because children are just... allowed to go everywhere? Particularly online? Even if I haven't been there in ages, VRChat had a huge problem with children. One of the previous most popular uses of VRChat was to head into public spaces to meet new people - But it quickly turned impossible because those spaces became flooded with young kids. Presumably because their parents decided that a meta quest was a reasonable babysitter (Which, like, why?? Why would you let a kid under 8 just do whatever they want in VR??). So you might've wanted to hang out and have a conversation with people about whatever. Not even anything necessarily 'mature' rated - But suddenly you'd have to keep it 'G' rated or get into trouble, because delicate ears were proximal. Invariably it led to people just hanging out in private instead. Which, of course, would be impossible if you didn't already know people. Which is why you'd want to hang out in public to begin with! So, the issue really broke the entire ecosystem.
As you said, you're suddenly expected to be a perpetual babysitter, in so many different spaces.
I echo your rars in earnest.
Oh - Though I do hope that this issue smooths out, somehow, for Minecraft. There's a substantial playerbase over thirty for the game! It's weird that's not acknowledged!