anybody with half a brain understand that in any context/industry/market when you go beyond the norml/average/typical level of good/service you're essentially over-spending money on signalling you can get something other people can't rather than the actual good/service.
The actual food itself often uses both more expensive/rare ingredients and is significantly more labour intensive to prepare, even if you could hypothetically order it off of a kiosk McDonald’s style
dining is no exception.
some people get a kick out of this.