If the FAA would prohibit airports that receive Federal funding from charging aircraft owners for self fueling, you would see Fuel Clubs, much like Flying Clubs to share the upkeep of fuel farms either for MOGAS, 100UL or plain old 100LL and the revenues that support the airport would dry up. Local taxes would rise to pay for an airport and soon the airport would ditch the ADS-B data grab.
Also since anyone is permitted free access to my identified data, why can’t the FAA or EPA etc, put a “cookie” on it and record the amount flown and send a tax bill annually?