RIAA already tried to take down the Github repo for youtube-dl (basically the original yt-dlp was forked from) back in October 2020. But outcry from among others EFF got it reinstated just one month later. Google is probably on the fence about this because they saw how it went last time. The slow killing of adblockers in Chrome seems to be something they are getting away with, so maybe that will make them bolder once things have moved along far enough that there's no way back.