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.
Over time, this will become just "the Left", and that's when opposing it threatens their power. Privately, I'm sure many would love to embrace it, since they've created this New Left, but publicly, they still need centrist support. Enough critical theory and critical race theory in primary school will get them there eventually.
If the last 100 years have taught us anything, it should be that they know patience when prudent.