I don't think he's done. I'll believe it when I see it if he's done. He's too good, and people will overlook these things. Either the lawyer will cast enough doubt over the allegations where teams will be comfortable enough with him, or Watson will publicly apologize, say he didn't realize what he was doing was so bad, and some team will forgive him enough.
The NFL is willing to overlook a lot.
I think it's going to come down to how strong the worst of the allegations are.
Ie the above sports illustrated story just makes him look like a jerkoff and pervert. It's absolutely not enough to keep him out of the league, even on a reoccurring scale.
The allegations about forced conduct and assault are a whole other story if found to be credible
That said the scrutiny and bad press will likely follow him for the rest of his career. The dude might just have to become a feminist or something