Maybe. I think he's a kid that thought he was going to be a star player at Texas and it just happens that we have had arguably a top 2 WR room in the country 2 years in a row where there are guys that just happen to have elite traits that he doesn't have. He wasn't better than Worthy, Mitchell, Whittington last year. He got passed up by Moore, Bond, Houston, Wingo this year. All those guys are NFL players and many of those are 1st-2nd round guys. Cook is talented and he's probably going to succeed at his next stop... but he lost his spot and wasn't getting it back. Now him potentially acting out like a bitch mid season in a year where we have playoff aspirations speaks more about his character and selfishness rather than his actual football talent. If history has shown us anything, Sark is probably going to bring in 1-2 NFL ready talents from the portal again this year to plug into his system. With Arch taking the reigns, there will no shortage of guys wanting to catch passes from him.
He could have busted his butt and transferred after the season like Malik Murphy, a kid that the entire fanbase and teammates still root for. But we all knew the diva Cook was during his recruitment so this is not surprising.