The rollout of the Non-Tesla Supercharger Pilot progresses in Europe, including the most recent full opening in the Netherlands, but the parking issues remain a significant obstacle.
The problem is short cables - designed for a specific location of the charging port on Tesla cars - in the left rear corner.
If a vehicle has a charging port in a different location than the left rear (when parking backwards) or the right front (when parking forward), then it will very likely block some of the stalls/require an unusual parking approach. Tesla explains to not use the station if the car can't fit a stall.