I agree, it should probably be banned. Re-loading you game in the middle of a run should not be allowed, however re-loading your save without collecting anything might be annoying if you click the wrong button in the menu (Re-loading from save point when meaning to go to snail town or the other way round) as that would mean you can't just re-load your save to correct the mistake and the run would be dead. However, exploiting the reloading to keep retrying a section defiantly should be banned.
I didn't realise you were planning to make a video on this, as I uploaded one on it first on a second channel. Sorry about that, I wouldn't have made that video if I knew beforehand. still, I would also love to see some more stuff on this glitch which I missed. I feel bad now about making the video without asking if you were going to do one first, so I apologise. I credited you in the description for finding this glitch by the way. I called it the Wallclip glitch but Zipping sounds much better as a name. Again, sorry for making the video on it, I should've asked first.
I also found that in Boss Rush you can glitch back into the normal map with your items, and beat the game from there. This is obviously faster then normal runs, so that could also be it's own category? The only problem I see with it is making too many categories
(You can also do it the other way, glitching into the boss rush from normal mode which if you go into the completion room says that you've completed it in 0:00.00)