[kaicianflone]

There’s a bit of irony here. A lot of commercial kitchens already rely heavily on microwaves and rapid heating equipment. In many restaurants the microwave is a very important tool in the workflow rather than something unusual. Do your friends not eat out much?

[wiether]

They don't cook food in a microwave, though. They reheat it.

The food have been cooked in industrial ovens in the factory.

[jghn]

Sort of, although there's importance nuance. One would be surprised how often microwaves get used in proper commercial kitchens, as in places making their own food & not reheating stuff from a central commissary. But it's not being used in the way one likely pictures when they hear this. An example is that microwaves are great for par cooking vegetables, especially potatoes.

[gzread]

Does everyone you know work at a restaurant?