If it's an unwanted skill, then it's an untrained skill. If it's an untrained skill then it's probably respectable or less. Worst case scenario: You're training a PG with all legendaries in JS, JR, OD, HN, DR, PA. Then a random inside skill pops - IS (negligible), ID (no change), REB (3% bump in an already 900k salary), SB (no change). (All numbers are estimate). I think a lot of people are overreacting.
1) So you're 60k 22 year old superstar is now 65k because of random pops. Small price to pay for making it harder to train 400k giants.
2) By slowing down primary skills training and redistributing it neglected skills, you're actually slowing salary increase.
So now the argument boils down to "well I want to do what I want, let me do whatever I want." This is like the regulation vs. deragulation debate in economics. I vote for more regulation by our benevolent BB overlords. They have more reason to keep this game in check because they have more to lose.