I agree with camps and showcases and only having catchers to catch the pitchers -
i have see a ton of it - but what are your sons - pop, Arm velo -
TBH - it’s very hard to for a catcher to get playing time - even being really good if you don’t hit well - I’ve seen it at all levels including pro.
But in college if he wants to play D1 - which shouldn’t always be the goal , he needs to work on hitting also - most people work on framing and blocking - and forget hitting . You have to to both .
my 2 cents