Food has been optimized for thousands of years to be as addicting as possible, so yes, that about sums it up. If anything the food has altered human biochemistry long before anything resembling Ozempic came to be and this is a course correction.
Packaged food optimization as an industrial, scientific process only really became a thing after WWII. Before that the effects were insignificant at the population level.
I'd argue that it's a few thousand years old. Humans didn't evolve to live on grains, but for the last few thousand years we've gotten the bulk of our calories from rice & wheat flour.
The other reply is correct in that I was speaking to a broader concept than just historically recent industrialization, but yes, that certainly accelerated things too.
Thousands of years may refer to domestication of e.g. corn.