Pitchers still need to field, and most of them still need to work on their hitting. Plus, they need to be a part of the team.

But... I agree that we are generally far behind the college game when it comes to optimizing in-season training. If you aren't making time for lifts, you are losing strength. If you aren't making time for rest, you are losing strength. They are very few HS or club teams that take that into consideration.