Technically these “not Parmesan” cheeses can be just as good as Parmesan if produced using the exact same method. Which is not impossible for a modern dairy producer.
However (and that’s a big one) it will cost just as much. Most of these are meant to be cheap, not good.
Real Parmigiano Reggiano isn’t vegetarian thanks to the rennet, so an alternative of equal quality would be worth the price to anyone avoiding meat products.
Technically these “not Parmesan” cheeses can be just as good as Parmesan if produced using the exact same method. Which is not impossible for a modern dairy producer.
However (and that’s a big one) it will cost just as much. Most of these are meant to be cheap, not good.
Real Parmigiano Reggiano isn’t vegetarian thanks to the rennet, so an alternative of equal quality would be worth the price to anyone avoiding meat products.