Being in the US and in the industry, deciding to sign it gave me pause. There's already talk on Twitter about what to do with the list of signatories.
Like others have said here, my daily life is substantively better thanks to rms. I use GNU Emacs all day and of course benefit from the vast infrastructure that GNU and other GPL-ed software provides. There's probably no one many of us (including many in the anti-rms crowd) owes more to than rms in the context of technology.
Once it's clear FSF won't be bending the knee, I'll be adding an FSF membership to help counter some of the corporate sponsorship pullouts. I wish there were more I could do to give back.
I hope you do the same if you want to support him.
I was born in mainland China and these attacks on rms remind me of the Cultural Revolution.