I really don't think it's too much to ask for people to edit and format their contributions to collabs instead of relying on someone else to do it for them.

Also, if you're in a collab, you should probably check up on it daily so it doesn't get posted weeks after it started because you forgot about it or got lazy. It's kind of shitty to propose a collab or agree to take part in one and then keep your partners hanging for enough time for someone to go clean shaven to Karl Marx level beard.