archive of tweet in case of removal:https://archive.is/h4k29
Seems ironic a browser claiming to be against censorship is now engaging in cancel culture if that's not bad enough seems they preemptively blocked reply's from the tweet on twitter as only "People @torproject follows or mentioned can reply." appears on the live page as of this writing.
After looking at the open letter in question it seems they are censoring all opposing views if this thread is to be believed: https://github.com/rms-support-letter/rms-support-letter.github.io/issues/175, not really related just seems like good trivia.
every last signer of that remove rms letter could die tomorrow and the world would be a better place.