I should have been more precise, you're right: decriminalize the consumption of all drugs.
There is a valid reason why you don't want Bobby Noname to cook meth and that is you don't want him to blow up the whole block because his meth lab practices are unsafe.
Usually when people say “decriminalise” it isn’t for crack. It’s for marijuana mostly.
But when they say "decriminalise ALL drugs" ... they are not mostly talking about marijuana. They are talking about ALL drugs.
Decriminalising the selling of crack & meth is just 100% stupid.
I'm not familiar with these US derivatives, but Cocaine and amphetamine/MDMA should totally be legal, nothing stupid about it. They are excellent drugs.
Feel free to sell them. Just tax them so high that any profits are nullified, then the tax can be used to help those that need help getting off the drug.
(Though this would likely put it right back where it is, and the black market would continue to supply)