i would say petrolhead is wrong. Fuction in a kitchen can be broken down by prioritizing different things. The fridge is the most used appliance in the kitchen, Followed by the sink, followd by the oven/hob.
You will generally oen a bottle of wine once a day/ dishwasher even less.
The services for the main appliances are a consideration ie. Extractor type/hole/water/gas/power/waste.
It is not as simple as you make it out to be. No designer ignores the other items you mentioned.