Most boards on 4chan, like the origami board, food and cooking, pets and animals, retro gaming, toys, etc are relatively harmless and are just a different way to participate in discussions than using discord or reddit.

The staff has cut down a lot on organized harassment that 4chan was notorious for in recent years. Those people migrated to private discords, telegrams, and other forums (like kiwi farms, soy party, etc). Ex, #gamergate was mostly an 8chan, Twitter, reddit, and IRC phenomenon - #gg people would get banned if they tried posting about it on 4chan