alt Hacker NewsIt doesn't actually say 'extracted' though, are we sure 'protein' actually implies that (i.e. separated it from other elements) vs. just being marketing copy to make 'yellow pea' et al. more exciting to certain people? (Protein, grr. Meat replacement, protein, grr, yeah.)
Not to mention all cooking really is is a bunch of refinement, extraction, chemical reaction, and heating processes anyway. I refine & extract & process in my kitchen all the time, including separating protein in milk (cheeses) or wheat flour (chaap, seitan, or for the starch) for example.
FWIW pea protein as used in beyond burger is extracted from peas in an industrial process - it isolates the protein from the rest of the pea.
Your point on cooking is fair. And, I'd still argue that modern processes introduce new types of chemistry that didn't exist in human food until very recently.