He got even more votes on his attempt at re-election. Probably only massive bungling of COVID that cost him a second term, not the crazy tweets on Twitter.
It's NOT just Trump, it opens the door, for concerted GQP misinformation campaigns on Twitter.
Trump may or may not run, but having Twitter as another misinformation tool only benefits the GQP.
Twitter didn't just do high profile bans, there were 70000 QANON accounts banned and misinformation dropped by 73%:
Misinformation surrounding the topic of election fraud dropped by 73 percent after President Trump and several others were suspended from mainstream social media accounts, according to researc…
thehill.com
Probably, but what is he likely to block? I doubt it will be GQP misinformation campaigns. He will call that a competition of ideas on the public square.