I'm just now seeing this thread since I've been elbows deep with harvest for the past nearly three weeks.
I'll point out that the TOS for Facebook/IG, as well as YouTube have similar provisions, and have for some time. The one for YouTube in particular is worded almost identically from my recollection. The same people who I've noticed bellyaching about the TOS on X by and large post on YouTube and FB/IG quite regularly. I'd probably have a lot more respect for their reactions if they'd drop those platforms as well, but as Sean pointed out, they're not going to leave where the fans are, particularly those who have large followings.
As far as myself, I don't see any need to get yet another SM platform that I'll barely use. When the current batch of platforms inevitably get replaced in the same manner that Xanga, Myspace, etc did 15 some years ago, I doubt I'll migrate to whatever is next. I don't have any real kind of "following" on my X or IG to begin with, so going to that effort to build a following that I don't have on another platform doesn't seem like the best use of what time I do have to work with. I probably sound a lot older than 37 in saying that, but I've got enough going on in my life right now that what spare time I do get is used for other things.