Yes that's exactly what I said, what about it
No, Riot said they need to have someone signed as 6th just in case something happens they aren't force to reschedule or whatever can just force them to play with the sixth. They are not telling teams "The sixth player has to play one of every 3 maps" or something like that, again they can literally sign their mom in and keep doing what they are doing. No players wants to waste his career on the bench so you either actually give him maps to play or you're gonna have a shitty sub