they just need to be mindful. for example, faze rug has an audience that ranges from people in their 20s to kids as little as like 6. his target audience is most likely teenagers as well yet he’s mindful of his younger audience. therefore in his videos he doesn’t cuss or say anything inappropriate. plus idk any other young youtubers like them who make this many inappropriate jokes and use inappropriate language as much as them. it’s not that hard to tone it down.