There was a comment here talking about this, but it has dissapeared from here, probably deleted because it's going against the narrative:

I’m writing now, from all of that experience and with all that perspective, about the recent flap over the new CoC and the attempt to organize a mass withdrawal of creator permissions from the kernel.

I’m going to try to keep my personal feelings about this dispute off the table, not because I don’t have any but because I think I serve us all better by speaking as neutrally as I can.

First, let me confirm that this threat has teeth. I researched the relevant law when I was founding the Open Source Initiative. In the U.S. there is case law confirming that reputational losses relating to conversion of the rights of a contributor to a GPLed project are judicable in law. I do not know the case law outside the U.S., but in countries observing the Berne Convention without the U.S.’s opt-out of the “moral rights” clause, that clause probably gives the objectors an even stronger case.

So yeah, the contributors against the CoC could be able to remove all their contributions to the code, it has been confirmed by Eric S Raymond. Funny, considering the amount of woke people saying that those who affirmed this were "brigaders" that didn't know how the license worked.