A first-load, hard-to-reverse choice
Playstyle is selected when you create your player, together with build, height, kit, and gender. The developer said changing these later requires payment, because selectable attributes are easy to abuse otherwise — so the playstyle you pick is the one your record carries.
Independent of cosmetic styles
The plan is explicit that set-piece styles — the idle and run-up animation cosmetics — are unlockable "not dependent on playstyle." That wording also confirms the two systems are tracked separately, so buying an animation never changes your football identity.
Expected to have a meta, with viable off-meta picks
The reporting creator's commentary — clearly labeled as commentary — expects some playstyles to be stronger ("meta picks") while off-meta choices stay playable. Read it as design intent absorbed from the developer plan, not as balance documentation.
Tracked as one of five creation axes
Playstyle is the third of five choices in the announced creation flow (build, height, playstyle, kit, gender). The builds-and-entities page covers the physical half and the payment lock's squad-planning consequences.