HEY World is probably “mostly” dead. Each week, I hit the dice to visit a random HEY World site and 9 out of 10 sites were last updated in 2021, around the time HEY World was launched. http://world.hey.com/~shuffle
Mastodon is the best way to keep up with what's happening.
Follow anyone across the fediverse and see it all in chronological order. No algorithms, ads, or clickbait in sight.