It’s the slippery slope and necessary path so umpires can maintain a role. I really wish it could be a fully automated system that just immediately displays whether a pitch is a strike or ball. The umpires could be reserved for other judgment calls. Maybe 20 years from now there won’t be an umpire behind the plate.
The system as implemented maintains both the umpire and the catchers role (in terms of framing pitches). I can appreciate the elegance of the solution to meet a middleground, but the "fairness gremlin" in me just wants calls to be consistent and correct.