I've seen the groundwork for this over the last 6-8 weeks, with 'people' (questionable-looking accounts) retweeting screenshots of similar-looking tweets purporting to be from Elon Musk, and other similarly fishy accounts going 'wow it really works' or the like. I noticed them showing up consistently in replies to Trump tweets, probably just because they get tons of engagement.
Those have been going on for years. They clearly demonstrate Twitter's incompetence (which seems to have culminated today) since they were very easy to filter out with a simple regex, but I doubt they are related to this attack.
