That doesn't explain the employment of the word "wanton". I'm much more concerned here with the abuse of the language than with the rights of the people to buy guns.
I suppose it depends on your perspective. To some, passing laws with an overt goal of "making people safer" (but not actually doing so), with the covert goal of regulating a product out of existence, is a wanton act against our democratic system.
"Wanton" means 'deliberate,' but regarding a cruel act. (OED: 1 (of a cruel or violent action) deliberate and unprovoked: sheer wanton vandalism.) I see this as an expression of ctdonath's opinion that California's actions passing the regulations is cruel, not that the regulations themselves are.
Not only have you missed the point (that passing the law is cruel, not the law itself), you're arguing the opinion on cruelty of the situation with the wrong person: I'm neither supporting nor opposing his opinion on the matter.
Well, license plate "technology" has existed for ~100 years. Microstamping exists as a single parent which has never actually been demonstrated or implemented in a commercial product.