Part of it is feared censoring / demotion in the algorithms; part is hypersensitivity / hyperconsiderate, because some people have indicated they are triggered by certain words, and I'm guessing another part is maximising reach. That is, if you use explicit language, your content may be marked as 12, 16, 18+ content, and half your engagement may drop because people in comment sections seriously underestimate how much "engagement" a teenager with a phone and infinite time generates.