slbaseballdad,
There is no doubt that you are venturing into a very exciting time for your son and your whole family. Enjoy it while it lasts!
Agree with everything previous posters have said. I am not a catcher, nor have I played catcher in my career (lefty perk?
). However, it is quite glaring that your son could get lower in the video while receiving. Not only does it give the pitcher a better target, it also gives the plate umpire a better look at the pitch, as his angle will be lower if he can get closer to the strike zone. This will help your son get the lower pitches for strikes, especially if he can work up through the ball on low pitches...not turning palm up on close pitches. And, if you watch most MLB catchers, they want to get as low as possible. Even with runners on, you can still be in a good throwing position while still being in a low-crouch position.
I've included a video of Yadi throwing out some guys. Probably best throwing catcher in the MLB. Granted, he does have a cannon, but it looks like he starts in a moderate crouch, but gets his body moving as the pitch is coming. I didn't notice his butt really high off his legs initially in any of those throws. See what you think...all IMHO. Like I said, I'm not a catcher.
Yadi