The cybersex thing is a meme, though it does happen sometimes in private worlds. In reality most of the "good" groups in vrchat that aren't children hang out in private worlds called "Friends+" which basically means friends of friends can join. If you click popular worlds you'll notice that half the population is in private instances like that, mainly to avoid children and toxic users.

Hell, furries have an entire network of friends and friends+ worlds that regularly reach 50+ users per instance on fridays, they also have entire private instanced conventions that have upwards of 1500 attendees whenever they happen.