I'm pretty much in agreement with this. And because of the way he plays, I do not think his production is sustainable as he gets older. But someone got to pay the f*** up for him to get moved. Either a Mantha-level fleecing or getting a younger, high-end player in return.
Obviously, the latter involves giving up more than just Bert. But Bert is probably a big enough piece to prevent having to give up a first-rounder.