OK, I must admit to being kind of confused
Disney has, IMO, is one of the best races in terms of race support I've ever seen. They do offer plenty of restroom facilities, character interaction, aid stations, food post-race, easy baggage check and cheap post-race massages for all racers. From how I read it, the only thing extra you are getting with the VIP access is pre-race food and heat. (Do we know that the restrooms are not portajohns???) Unless you are an elite runner, you usually don't have access to this kind of thing.
Disney certainly isn't trying to extort extra money from you for "basic race support." If racers want a little extra heat and a pre-race snack offered to them, and Disney wants to put a premium on it, then I totally understand that from both sides.
I personally will choose to save my money and enjoy the atmosphere in the corrals.