If you edit a tweet I'm sure Twitter reserves the right to roll back your edit, yes. And I don't see why that would be illegal. Edit: re: reserving the right,

If you edit a tweet I'm sure Twitter reserves the right to roll back your edit, yes. And I don't see why that would be illegal. Edit: re: reserving the right, https://twitter.com/en/tos https://twitter.com/en/tos does indeed grant Twitter the license to "adapt" and "modify" the content you post to it.