Honestly, if more people wondered about who'll read what they write online, and whether it matters that those folks read it, the Internet would probably be a better place.

I really don't care about youtubers using tools like this. If it works for them and saves them time: great! If it reduces their level of authenticity: that'll lead to a correction of their popularity.

For OnlyFans... meuh. To me, the idea of interaction there reminds me strongly of the "adult" phone lines of old. You want someone to tease you and say naughty things to you? Well, you can get that for 99 cents/minute.

If you want to buy the attention of someone specific, when they can let someone/something else do that for cents on the dollar... don't be surprised to be tricked.