You could buy a lot of ready meals (which are just food that's been prepared offsite in bulk)

You can't buy a really good meal this way though, for love or money.

So, to the degree that technology can help average people do more in the kitchen it could be genuinely useful. I have no opinion on how likely the tech in the article is to actually do that.

If food is all interchangeable to you then why not just drink Soylent. People (apparently) are buying these because the results beat things like readymade meals. I say apparently because I don't know much about them firsthand.

Maintaining food quality from right after preparation to time of consumption is a non-trivial problem. Re-heated food is just not as good.