I don’t know for how long, but I just used it and it worked.
If you waited to wipe your account until after the protest started (like me) there are likely a bunch of subs that were private, and your comments weren’t deleted. It’s worth checking again to see if there are any comments you missed.
Just ran through and used it yesterday. Then I did some searching and still found some comments in open subs.
Those comments don’t show up my user profile. They also don’t show up in the delete log.
Reddit up to it’s normal shenanigans.