It's pretty shitty, but that's a reflection on the state of copyright in the states - this isn't Discord's fault, and this isn't Google or YouTube's fault, and there is not really anything they can do to make it acceptable short of people changing copyright laws. (NB: I am not a fan of the way things are, just merely making an objective statement here)
I'm more surprised that the only thing they asked was a shutdown when these bot owners were collecting large amounts of monthly payments for nothing but delivering their own ads and pirated music.
I'd imagine these named ones in particular were looked into further because they were straight up collecting monthly fees for content they don't own or have the right to use. And adding ads for their own "premium bots" in every single message the bot sends. And gating features like volume behind $9/m plans.