This is why in the LOCKLEGION, we have a Lock Legion Account, where most collabs are eather submited under, or co-authored.
I suggest you make like a "One Love Collab team" (Which all collab memebrs have access too) account and submit the movie UNDER THAT ACCOUNT, prehaps co-author the most contributed users and everyone is happy. I find it extremly selfish when people take credit for the hard work of others. mainly espcially when the user themself makes like one shitty part (like in SCYHO) and then takes all the credit. Its not hard to organize a collab, you just make a thread and keep everything in tack.
A collab belongs to everyone who participated in it. Not just the people who organize it.
Only time when that is justified is if the organizers work their ass off with lazy people, make literally the best part, and make all menus and put the collab together. Only then can he truly take credit for it.