This Tweet looks legit.
Elon Musk @elonmusk
The people have spoken.
Trump will be reinstated.
7:53 PM ยท Nov 19, 2022
I have not re-activated my personal account but I am signed in with my work account, which I only use for work purposes and not for politics or anything else.
Once I verify that President Trump's account is active again, I will attempt to re-activate my personal account there once again, which I de-activated in the wake of the irresponsible decision by Twitter to ban our President from the platform. Otherwise, I'll create a new personal account.
It still disturbs me that the vote to reinstate was as close as it was (53-47%) but I think there were a lot of bots involved as well. In fact, I would not be surprised if the purpose of Elon creating this poll was to flush these bots out.