A guy named TylerRM posted this on 2+2: https://forumserver.twoplustwo.com/2...n-wpn-1830157/
Whlie there is no verification that his numbers are accurate, he posts a lot of links to data, and I'm guessing this is roughly correct.
ACR has long been known to be poor at detecting bots, and even worse at banning them when people complain. They briefly did a campaign where they would ban bots and publicly out them, but that died quickly.
It is not clear why ACR is so bad at removing bots. Some suspect that owner Phil Nagy likes the massive rake and activity they generate, while others think ACR just doesn't care because it really only affects pros at the end (fish will lose no matter what).
This led to British poker pro Patrick Leonard to post this rant on Twitter:
https://twitter.com/padspoker/status/1742916713845579969
Patrick isn't really wrong here, but this isn't the best statement. He fails to call out any particular site (though it's highly implied to be against ACR, and to a lesser extent, GG), and he doesn't give any recommendations as to where to play. He does semi-endorse Pokerstars in a subsequent tweet when people criticized him for this.
Unfortunately, "just don't play on these sites" isn't an option if you're a poker pro without live options, or if the live options don't work for you (for example, if you have children you can't leave at home). Also, in the US market, there are not many options if you don't have legalized online poker in your state (or even if you do, as those sites are fairly dead). You basically have ACR, Bovada, Global, Betonline, and those fail apps like Pokerbros.