Slice it anyway you like, but this law in Texas did in fact violate the "equal protection" clause.
You're shedding crocodile tears--the same sort of tears you'll shed if dope is decriminalized and the taxpayer gets stuck with the tab of paying for it with costly Soros-style touchy-feely rehab programs.
This fundamental dishonesty and crass failure to face to reality is the most annoying trait of libertarians. They agitate and scream for the legitimization of socially destructive and costly personal addictive behaviors and then sigh softly when the taxpayer gets hit in the wallet.
They roar like lions to implement the liberals' social experiments and then retreat like mewling kittens when the costs come due.
Proof? Now that the right to enagage in disease-spreading sodomy has been declared sacred in a Roe v. Wade sense you'll see no further threads posted by libetarians protesting the social costs this change will impose on us all.
Flaming hypocites. I'd rather deal with a Ted Kennedy-style liberal. At least he's fully honest and upfront when he mugs me.