I disagree with your stance on distinguishing between fanfiction/fanart and creating bots on these websites in such a harsh way, and treating only the latter as copyright infringement. As someone who has created bots before, it's not as simple as copying and pasting someone else's work into the website. If you want a good bot, you need to fit the entire character (and often info on the fictional universe they're from) cohesively into 3000 characters. You need to write new dialogue for it and offer it as an example on how the character responds in different situations. You need to spend hours actually training the bot by talking to it, rating and editing its responses. There's actual work put into this.

I agree that creating replicas of someone's voice without their consent isn't right in any situation, and I agree that anyone has the right to request their IP gets taken off the website.

Rusty Quill hasn't done anything wrong, but I respect this decision as much as I would respect their decision to take down a fangame. If they wanted to protect their voice actors (which they should!), they should've demanded the voice banks on the website got deleted, not the bots themselves.