"Hurts Them" - It doesn't hurt player development and in the long run it will generally help players.
Some HS or one and done players will be hurt because they will get undeserved guaranteed contracts based on potential -- if they had played in college longer and been exposed they do not get the contracts (but somebody else will get those guaranteed contracts instead). But, I assume if you are against the one and done rule, you must be against guaranteed contracts anyway... cough, cough.
If you talk about players right to choose, I guess it does take away from this right. But what I always find odd about the take that "Players should be able to enter draft out of HS" is that is completely hypocritcal. If you are for HS players being eligible for the draft based on "rights", you should also support
- No Draft, players are free to sign with any organization they want
- No Trades unless players approve
- Unrestricted Free Agency at the end of each contract
- No Salary Cap
- No Salary Structure for Rookie Contracts
- A player of ANY age signing an NBA contract
Its the nature of professional sports. Nothing is abritrary. There are many violations of "choice" that are OK because they are collectively bargained. How can you be against one rule but not against all other limitations.
"Corrupts the College System" - Yes this is a by product of forcing players to go to college with no other viable options. I can't disagree with that.
"Hurts the NBA" - No, an age limitation vastly improves the NBA product, increases parity, reduces risk for draft teams, gives them free development / marketing. It's great for the NBA product - not sure how you can argue otherwise.
"Subsidized Minor League System" - Something else I agree with. The NBA should put more money into strengthening the minor league system.
Although, consider 18 and 19 years olds that do not want to go to college and are only average prospects and may not be drafted in the first round. Is playing for the Bakersfield Jam for $40,000 a year more attractive than playing at a school like Syracuse... travel all day on buses, stay at lower class hotels, rent a basic apartment, not the big kid on campus (and its related social "benefits"), poorer training facilities, harder to follow an optimal food diet.
So even though they don't really want to go to college for academic reasons, the free market forces them to choose it. College is still more attractive. And this applies to the majority of players -- the players that are not stud NBA prospects.
Should the NBA over-pay these marginal / undrafted prospects to play in their minor leagues?