The OP asked for opinions and people offered them up. I can't imagine anyone who went to a party with a hot dog bar as the main course would be anything less than gracious to their host for inviting them. I know I wouldn't be.
That being said I don't eat 80% of the things the OP listed that she would be serving. At a party with that kind of menu I'd put a little bit on a plate and probably push it around and then spend most of the time socializing.
I'd thank the OP for having me and if another invitation to a party was extended I'd graciously accept.
That doesn't mean if the hostess asked my opinion on what to serve I wouldn't make some suggestions to help round out the offerings.
Nothing wrong with your opinion. You sound like a gracious guest - unlike those that said they would refuse to eat. I thought I was clear that I was talking about those who called the OP rude and cheap.