(This is a riff off of one of the jokes from Slavoj Zizek "let the robots do the sex for us while we enjoy our platonic love by having coffee together" - basically by deferring your "duty to enjoy" you are now free to do whatever you like (https://www.theguardian.com/commentisfree/2013/feb/14/valent...))
Not in the case of online creators and not as a substitute. The entire draw is the (either perceived or real) authenticity of the creators. Even in case of people masking behind characters, as with say Vtubers which has become hugely popular the entire draw is the real personality.
The only use case for this I can think of is something like language practice where the lack of a real person might be more comfortable for some. I could see Duolingo use something like this.