https://ourworldindata.org/agricultural-land-by-global-diets
Also, by the same logic seatbelt laws would be "resorting to fascism" because it's forcing all people to use seatbelts. It's not fascism to have laws.
Nothing is truly fascist with a dictatorship, but you were the one to start throwing around that term. That said, regimentation of one's diet and control over the agricultural industry, likely with the supression of opposition in the name of what's good for society, would reasonably fit the rest of that definition.
The linked article talks about global adoption of dietary habits, mainly refraining from meat consumption or switching to other meat types. The only reasonable assumption for that happening is that some level of force would end up being applied.
On top of all this, the article linked (and your comments) fail to address the question in my comment about sustainably supporting an increasing population. The article you linked promotes intensive alternative such as farmed poultry, fish, and shrimp. To do those sustainably, we would have to look at massive changes in the crowding, low nutrient feed, and pharmaceutical use rampant in those. It also doesn't address the potential demand for land for other uses such as industrial or residential, nor for the anticipated increase in industrial use of crops for things like plant based plastics, nor does it seem to account for land classification and suitability, such as what could be grown on specific pieces of land and the economic labor models of the crops.
It's easy to say theoretically how we can just adopt another nation's food practices (not preferences). It's another to determine the geopolitical feasibility of it. I point out preferences here because we see that many nation's have a high demand for animal products as they develop.
Nice.