Playstyles - do they make a difference?

[Alberuscg]

i do that deduction based on everyone's highest youth player this season get a playstyle.
but tbh my lower % 19yo have more playstyle points atm because i keep training him since he's just 4* early on, now he's 6* and automatically be in startin11,
last season he's just a reserve. and almost unlock intermediate already 3/4 of standard 1500 points..

How many greens do you spend?

My 6 and 7 young players did not have the playstyle. The unique one is the worst, 4*