I will take you up on the beer!
Of course kids should improve when they go to college. And most do, but it doesn’t always go the way HS players and parents think it will. I help coach a pro kid that went to a well known national program. He went backwards during his 4 years there due to LACK of coaching. In the college game I see lots of emphasis on conditioning and developing mental toughness of pitchers. Not near enough teaching about how to improve/correct the throwing mechanics. I have my own opinions as to why but the reality is that kids are too often left to figure it out on their own if they develop a bad habit - and pitchers fall into that just like hitters do. It’s part of the game. There is so much talent on the pitching staffs of top 25 programs that if one kid doesn’t produce its next man up. HS players and parents assume they will get good coaching as they move up to the next level. But it’s not a given. Better do your homework.
We can agree that we all have too much free time on our hands.