Couple of points.
They let AB go, not only because of the case in FLA. Not only because of the content of the harassment email. But because the fact they he EVEN sent it only proved that the idiocy was NEVER going to stop, regardless of what happened on the field.
A lot was made of the fact that AB caught 4 of the first 5 targets Brady threw at him (or something along the line of that number). But not much was made of the fact he missed on the next 4 targets after that. The point being that AB wasn't exactly the panacea he was made out to be. If he had stayed there WOULD have been downs as well as ups one the field as well as off it.
Finally if AB had been able to stick around, we still would be having problems running the ball, Marshal Newhouse would still be the LT with all that entails, and we'd all be wondering if Lamar Jackson is the next big thing, or just another one trick pony.
I've always been OK with the Pats giving it a shot with AB, but he's proven to be just another talented idiot, and BECAUSE he's gone we spend most of our time talking about other things beside AB. While he was here, it was ALL we talked about. Much nicer now.