I've played a lot of sports - watched a lot ..... I've neve seen a player with surgery required ankle injury jump and frolic and de-cloth themselves and run out of the stadium/court egging the crowd to cheer them all the while smiling
Have you?
Don't have to be a doctor to figure that one out
I don't want to start a holy war, but it's possible that a lot of people involved with this bear some culpability. I saw a video on YouTube where someone that was an NFL medical staff guy for many years looked at highlights of the game and said it was clear as day that AB wasn't close to 100%, couldn't really cut or put full weight on his ankle, and was clearly favoring his good leg. There was even a play where Brown just fell down after a catch cutting when his bad leg gave out. Whoever the guy commenting was said that every player has a different tolerance for pain (which is very hard to gage and also hard to determine what is playable and what isn't). He even said when AB was doing jumping jacks, he was putting a lot more weight on his better leg (and that was not the same as running, cutting, planting, or getting tackled).
From my own personal background, it sounds like I have had injuries similar to what AB has had. I played some of the worst sports for ankles (soccer, tennis, basketball) back in the day. I have needed ankle surgery on both my ankles for a long time (and never got it) for tendon related and bone fragment issues. Back in the day, I could have felt fine to start the game / match and had my ankle flare up out of nowhere. It happened to me all the time. All it took was landing the wrong way.
Obviously, I was not a world class athlete, but there were times I just couldn't play out of left field (and I might have felt better a little while later). I also didn't disrobe and fling my uniform into the stands, nor would I have started posting stuff about coaches online, so there's that. And no player earned more playing time or got a better rep with coaches by NOT being able to play.
As for AB keeping quiet about his injury during the week and leading up to the game, it's possible he mostly kept quiet because he was about to hit some incentives and wanted to try to get them on the down low. He's been banged up most of the season. Maybe he didn't want to draw attention to himself for the very reason things went south . . . that it would create a problem / scene / distraction.
Who knows what Arians knew or didn't know, but it was clear he was getting fed up with AB. Brown certainly has a laundry list of poor behavior, so he's lost any chance of getting the benefit of the doubt. However, I am sure there are lots of NFL players over the years that have played when they shouldn't have, whether that's by keeping quiet or by having to go into (or forced into) games to keep their jobs and paychecks.
There's no doubt that Brown didn't handle things well, but maybe Arians and the Bucs haven't handled it well either. Similarly, who knows what Brady, Guerreo, and the TB training staff knew and what they said. Brady could have just said Brown was fine and he'll be ready to go (whether that was accurate or not). Maybe more will come out about AB's injury status. But yeah, he's gone on meltdown again and that's an entirely different problem.