It looks like the Twitter devs were not actually trolling us when they revealed the implementation of an edit button a few days ago. The dev team claims that Elon Musk's latest poll has nothing to do with this, as the feature has been in the works since last year.
https://www.notebookcheck.net/Not-an-April-Fools-joke-after-all-Twitter-is-really-adding-an-edit-button-but-only-for-Blue-subscribers.612284.0.html