There’s a good reason that catching prospects sometimes take a little longer to fully develop when compared to other players in the minors. It’s the same reason why it isn’t always important for them to be great with the bat.
Just on the defensive side of things, catchers have so much going on, giving prospects more stuff to work on in the minors. So while the Pirates have a couple of catching prospects that have been recognized for their abilities with the bat, it will be their work defensively that will allow them to stay behind the plate for the long term.