@STP_KITT We actually also got a lot of people being thankful that they could remove messages they had sent to the wrong chat, sometimes with sensitive info. See also https://www.typing.com/br/articles/making-digital-mistakes

As to editing one's own messages, we didn't hear many complaints although in theory it could be problematic. Mostly it's used for typo-fixing and fixing some grammatical nonsense, or some inline web-link. #deltachat is meant for usage with somewhat trusted people, not unknown people who try to trick you.