Probably gonna be a boring post to most people since I've kinda been going on about it since the new info came to light and even before that there were others harping on it for ages, but now that there's definitive proof that it's just easier to use than stock pipes this unlock should probably be banned. Kinda want there to be some formal discussion on it since most of it has been on other threads related to whitelists or the original thread where it was showcased how broken this shit really is.
Obviously (or at least obviously to me) it should be unbanned if valve fix it or a plugin is made that fixes it (I'm not at all knowledgeable on exactly how possible this is but my first thoughts would be to say it's unlikely if not impossible). I still think that if it worked how everyone thought it did it would actually be healthier for the game to have consistent rollers than wacky chaos rollers (utility from better roller jumps + objectively speaking mechanics that behave in a more consistent manner provide for a more competitive environment, even if the effect is stronger as a result).
I also wanna refute a point that some people were making where they acknowledge that it's broken and stupid but Demo probably needs it for balance reasons:
I think removing the Iron Bomber at this point would be a slight nerf to all Demomen but it's not something that should be missed. Ever since having it pointed out I notice the amount of pipes I hit that are just about grazing someone's shoulder or hair and I'm like "This is a cool unlock". Obviously I/most demos hit pipes that would also be hits with stock a majority of the time, that's what good aim and muscle memory leads to, but what would have been an unfortunate close miss is now a hit that nets me a frag/damage/round/etc. You don't aim for the edges of hitboxes just because you can. End of the day, Demo is still the strongest class in the game, and was somewhat underrated as a DM class for the longest time. This can be proven by pretty much any Div1+ Demoman tbh but even more so by the top Demos of any region who DM their way out of bad situations. (I don't think many active top-level players still buy into the whole "Demo is the weakest direct combat class" line, and even those who do realise it's not as severe as in 2010 when no one knew how to hold a mouse and had no limbs).
TLDR: Demo with stock pipes is strong/balanced enough, he doesn't need something that randomly bails him out a few times a game. Also it's probably unfun as fuck to play against specifically as Scout, and yeah "haha scout class in 2020 is OP" but there's better ways to balance the dynamics between Scout and Projectile classes beyond "Demoman sometimes kills scout for free ontop of being able to outplay them sometimes anyways" (I rarely notice hitting Soldiers cause of the broken collision fuckery)
Obligatory tf.tv discussion thread strawpoll: https://www.strawpoll.me/20917602