Not sure it's throwing around him....it's early, and if it's anything like my son's team, pitchers are just not game ready yet. Son's team didn't get to practice outside before leaving for their opening weekend road trip the past two seasons. Pitching struggled. It took a month until they started looking better. I wouldn't worry about it...if he's hitting strikes, that's all you can hope for at this point
They are throwing around him. I had my doubts but after watching video it is what it is. Can't hit a strike if one isn't thrown.
I guess I'm confused.....and maybe I'm not clear on your questions. Are you talking about in BP....or in "game situation" hitting. Even if it's indoors, it's two different things. BP normally is thrown by a coach.....if my son is pitching to a batter in the pre-season, his pitching coach is watching him...not the batter. No different than if it was a real game, it's his job to get batters out. He can't "pitch around" a guy....the pitching coach would see that as a walk....and my son would be penalized for it. If your son is batting in a case like this, it's no different than a game....the pitcher is trying to get him out. Both sides are getting work in. I wouldn't swing at junk if I'm your son....he'll look bad to the hitting coaches. They don't care what the pitcher is doing, they are watching your son. If your son doesn't get anything to hit...that's a walk. Coaches would rather see that....even in practice than see him swinging at anything that moves and ending up with what would be a K in a game.
My son went back to being a 2 way guy last season (DH and P). He hadn't really had any game at bats since HS (8 AB's his freshman year). I would talk to him this time last year about how he hit. He'd tell me..."John struck me out...I got a hit against Timmy........Jimmy struck me out. Dang, they know I can't hit curve balls so that's all I get". Well guess what....John and Jimmy looked good to the pitching coach.....and my son looked bad to the hitting coach. That's how it works. He kept working....eventually got back to his HS form at the plate and ended up DH'ing quite a bit. If those guys had thrown him FB's down the middle all the time he'd have looked like a fool when the season started.
Keep in mind also that it's not like HS....where a pitcher throws his best stuff and if you hit it you hit it. Usually that "best stuff" is a FB....so you wait for one...even if it means taking a couple pitches to get to it. In college, pitchers can throw any of their pitches for strikes. Heck, if a team sees you struggle on your first AB with off-speed, you're not likely to see another FB the rest of the game....maybe not the rest of the series. As a hitter you have 2 choices....hit the off-speed when you get a chance...or walk back to the dugout. I'd tell your son to stop feeling like the pitchers are against him (even though they are...because that's THEIR JOB)...and start figuring out what to do about it.