The rule used to be if the shoulders wore most, the tyre was running under-inflated. If the centre, then it’s running over-inflated. Some cars will scrub the outside shoulders off the front tyres even though their geometry is correct. My old Alfa cost a fortune in tyres for that reason.
Our (relatively) modern SEAT Ateca wears on the shoulders as well, correctly inflated (we had a few flats, so checking pressures against the door sticker constantly now, paranoid).
I suspect that has partially to do with spirited driving and maybe slightly folding them over (no idea), point was that it’s not just older cars that do this.
Prior: SEAT Ateca Xcellence Lux 1.5 TSI DSG MY19, VW Golf GTE PHEV DSG MY23
Current: Hyundai Ioniq 6 Ultimate
Next: we'll see what's available in 2028.