>>512418594
You've forced the question's answer into a boolean how many posts are bot posts, when it's more of a spectrum as in of the posts that are bot posts, obviously it's between 1% and 5% of all posts, who come over in waves and not evenly distributed, what is the nature of how they're being crafted?
To answer your question I'd estimate the number.
On any given day between 1% and 5% of posts. Evently distributed between copy pastes from other bots mixed with human content and mixed together by humans. And the other bots, when people want to be funny how laughably bad these models are, you just plug some posts from 4chan into it and post what comes out.
Very little of it 100% bot, there's the moshpit of human activity, copy-pasting, and the inevitable editing, so what is and isn't a bot post, decays to impossible to know, since you have to talk about the evolution of the copy pasta and how many times it got modified by humans and bots.
https://www.youtube.com/shorts/0Sbx23ZlMfI
There's no satisfying answer except that yes, bots are being used a lot, more than you'd probably expect. And it's not the shitposting component, it's the part that comes through that's like it's out of a skunkworks research project from someone coding up a daisy chain of chatbots then sampling the stream.
The powers that be are intentionally blurring the line so that you can't be sure.