Is this supposed to be a “the world has turned into shit” take, even though it’s been like this for ages (way before the 4chan poster, or anyone alive for that matter, was born)?

What do you mean by that? Go find a sport/hobby. Clubs aren’t expensive at all.

I wonder, are people advocating for a system similar to the USSR or North Korea? Or actual communism?

Yes of course it’s safe. I drink filtered water from our fridge, but tap is perfectly fine too. I’m from Europe btw.