He’s not a good catcher. His hitting speaks for itself although he deserves 1000 at bats or so for sure. His defense is completely overrated and it largely stems from the goofy catching position he uses (at the request of the coaches). It’s nearly impossible for him to throw anybody out and he can’t block anything in the dirt that isn’t right at him.
I believe framing is overrated. The problem in trying to quantify it means you have to know whether a “stolen” strike was just a missed call by the ump independent of any glove magic. If umps are fooled by him jerking his mitt to the center of the plate then we need robo umps yesterday. How a catcher receives the ball has value. In the old days it was called soft hands or he receives the ball well but it’s cumulative effect isn’t that great. Go back to a crouch gain some lateral movement and throw somebody out. I’ll take the best you can do on framing after that.