Fundamental chemical engineering reality prevents it from scaling to extent needed for production of commodity protein

Some people I know in the general field and a PhD chemist and a factory process engineer I talked with do disagree with that a bit.

Something I do see as chance are future generation bioreactors in any case.

it fails as a way to avoid animal exploitation because fetal bovine serum vampired out of cow fetuses is still required to make the stuff.

That is true but can be substituted in the future.

The main points that help us now are changes in consumption, resilience and an end of capitalism.