For X.com, how about 'Xpress' instead of 'tweet'? Like, 'That was what he Xpressed today,' or 'She sent an Xpress about it.'
That said, I have found myself using 'Xwitter' and 'Xweet'.
Setting up the site, I linked to an old Twitter profile. I tried to create a subreddit just so people could discuss current events there and we could get feedback, but it was banned within a couple minutes, with no explanation. Since it only had the headlines, my only real suspicion could be that it was censoring for the word 'Israel'. I didn't bother with Facebook because I've had accounts banned for similar reasons, or when people just spam report a page because they don't agree politically, and I gave up putting any real content on the platform about 7 years ago. It's just not worth the effort of creating new Facebook profiles, or even new groups, so censorship against normal sources of information can easily and successfully be accomplished on Facebook. X I'm not sure yet, as it's owner is philosophically and has been activist pro-free speech, but is currently increasingly allied politically, which means increasing political and lobby pressures, and there are no new platforms that actually have measures to protect (a real, reliable on a long term with meaninful auto-accountability for the people working at the platform) normal people who are publishing things. Currently looking for a platform, similar to reddit, where we could get feedback and discussion on the topics we blog about.