Given the deadline isn't until January for spring transfer, I don't blame the NCAA. As Napier pointed out, some guys are going to enter the portal later, but are going to complete the season with the team. The way I see it, this is totally on the players who have already quit on their teammates. I say leave it as it is, so we (or more importantly, the coaches) can know who has already checked out. No sense wasting each others time.
If I were a coach, I wouldn't want a guy from the portal who didn't see the season through, unless it was due to injury or some non-football reason.