I'm sure that some backyard chemist would be up to the job but... what sort of quality assurance and certifications and standardisations are going to be enforced on a backyard chemist exactly?

This is the line between "Are you an Anarchist who simply thinks hierarchical society isn't worth modernist living?" and "Are you a Libertarian wearing a hat that says 'Anarchist' so your friends don't get nervous when you're around their pre-teen kids?"

I've heard not-unconvincing arguments that modernism (including modern medicine) actually sucks and a lot of what we're doing is just slapping bandaids that our rampant abuse of ecology has created.

But this just sounds like markets-schmarkets nonsense.