I'm a youtuber to support my programming project, and I see many people in my situation being a lot more shy about doing that. It's a lot of work to do it properly and takes dedicated attention to not have your parasocial community turn sour or vicious on you: it's no joke.
I wonder how much of this is people expecting that ANY media presence will throw them into the troubles people experience when they have all the media presence. I know if I blow up big enough (not much of a threat right now) that someone will come to hurt me, no matter how I am. That's not about me, it's about statistics. If I blew up that big I could probably afford security…
I think some people assume you'll be confronted with that sort of problem right away just by appearing on youtube etc. Sure you will… eventually. Or if you're staggeringly unlucky.