Yeah, it'd be annoying to have to check each time I'm considering treating, but a lot less annoying than if I wrote something and then couldn't gift it.

I've seen a few people commenting/complaining about harassment via gifts but harassment via comments seems a LOT more common. I guess the archive doing something to disallow gifts is a lot easier than creating the blocking feature that would prevent that kind of comment harassment (although blocking, dependingly, would also affect gift giving but not as much)