I understand that this is frustrating for people who mostly write thoughtful emails. But personally I use gmail for exactly the following things: account recovery, system notifications, and b2b email threads. For the latter, I really couldn't care less about form or shape. It's a tool to an end, to get a point across. I found the auto writing stuff pretty useless so far (suggestions change the intended tone or even meaning of the email) but summaries are very useful to get a grip what happened in a larger thread which I should only know the gist of anyway.

I might be in the minority but to me email is an annoying requirement to reach out to people, and that is not due to the AI tools, it's due to: thread management, the horrible noise of unasked for newsletter, and system messages and updates I theoretically do care about but that are just inconsistently formatted and badly listed. I welcome AI giving me a better overview over what's going on than what I myself have.