So very true. It would be itneresting to know how many games are adult here. You cannot do this with searching for adult tag, as games can be adult without having a related tag like nsfw or adult. Changing setting to show no adult content does not change number of games in browse.
Steam is safer than Itch for adult developers. They have a clear set of rules: no glorification of rape, no loli. Everything else goes. Also, they check your game before listing it, so once checked, you are OK.