These are needs that all previous generations fulfilled through their community, or by meeting strangers. But I have the feeling that (some subset of) current generations find that proposition unacceptably risky. And I guess the offense comes from the idea that we should all be inconvenienced for their sake, and also from how the idea "I can only make friends in a safe space" is presented here and just expected to be believed.
I feel like it's really easy for people to not get out of a comfort zone and meet people just /randomly/ on the road or at the Grocery store. Especially to the point of being friends.
Sadly our community has died, church attendance is massively down in most of the world. Which killed that social circle, clubs seem to not really exist anymore. Basically we're down to meetup.com, work, and bars.
It seems at least there you find people with shared interests rather than the random sample at work or church.
I met my friends through language classes and meetups as I emigrated.