Its status is unique, and meth or crack will not be treated the same way as alcohol in law no matter what form decriminalization takes.
The law will treat other drugs the way lawmakers decide it will. As I understand it, the legalizations in CO and WA treat marijuana very much like alcohol - so the available evidence is against your unsupported claim.
The FDA regulates methamphetamine, the codones and cocaine at a far more stringent level than dronabinol.
State lawmakers do not have quite the same leeway with those substances.