Also, donโt leave your account unused, delete it. User and follower numbers count.
And least as important, reply (if necessary to another corporate mail address) every email with Twitter/X in the footer, with a kind request to stop promoting and facilitating X.
I wouldnโt. Not because I donโt think itโs a good idea, but I want to let them see that specifically X became a disgusting fascist deepfake childporn abyss. Adding fb as well, increases the risk they donโt quit any of them, because it might give them the illusion my message says more about me โbeing anti social mediaโ rather than about X in particular.