I don't see any of those (horribly-sounding) AI "helpers" when I read or write messages in gmail. I tried it again just now, to make sure that nothing had changed since yesterday. I do remember clicking through some suggested "feature improvements" a while ago and saying "No" to all of them. Can't really remember what it was though. Can it be that the author has some option enabled in settings somewhere which allows this? Or is this something GMail is (forcibly) gradually rolling out? If so, shudder.

EditUpdate: After reading another comment, this must have been a bunch of "smart features" which gmail suggested a while ago. I just, as I said, refused all of them. So they're available in Settings somewhere. Find, turn off.