TL;DR: for a whole decade YouTube allowed a copyright troll to claim all the rights on a recording of a washing machine end cycle chime
The account of the copyright troll is still standing and it’s not permanently banned
IMHO in this case YouTube should permanently ban at the first offense any copyright troll that maliciously claim as their property something that’s in the public domain
Also: if it wasn’t that it affected a big streamer with lots of followers, YouTube would have ignored the problem
Google also lost a court case and had this system forced onto them by the law. I believe it would literally take a change in the dmca (ideally just repeal it or strip all the anti consumer bs out of it) for them to be allowed to do anything different.