While I did not agree that you were stereotyping people with your list, I also do not agree with your assertion that most people could afford Disney if they gave up a few niceties in their day to day life.
For a family of four staying for about a week, let’s say park tickets are about 3k, value hotel is about 1,500, food is about 2k. That’s 6,500 without adding anything extravagant or high end. It also doesn’t include any souvenirs, stroller rentals, transportation to Orlando, parking, photos, Magic Bands, or unforeseen vacation expenses like buying everyone a poncho.
With that a family would need to save around $550 a month (just under, but let’s round up as I gave a low estimate). Do people have small luxuries? Sure. $550 a month of small luxuries? Doubtful.
I think there’s a significant grey area there where yes, people could afford Disney if they cut out little Billy’s karate class and stuck to mostly low cost groceries and bought used clothing and so on. (I say that’s the grey area because anything beyond that, like skipping meals or not putting money into a retirement account, is more black and white - people shouldn’t be doing that.) Personally I think that’s a questionable trade off though. Prioritize quality of life for a seven day trip, or for the other 358 days of the year?