Gibbs leaving is a business decision. I don't like it but I get it. If he has a breakout year as the featured back somewhere like Bama his draft stock will most definitely elevate.
Griffin IMO is getting bad advice from whoever he is listening to... sounds like it's dad.
Mason hasn't actually left yet. He seemed poised to go try for the NFL, but all that could change now being that he could come back and basically be guaranteed a good workload. I don't think he had planned to transfer, not yet anyway as he isn't in the portal. I think his plan was to give it a go at the NFL, and based on what feedback he gets either enter the draft or grad transfer. It's possible now that he could stay if he wanted.
Amerson was never going to see the field here. He got his degree and is moving on.