You have identified a root perversion. Roscoe Filburn’s wheat did not leave Ohio or even his farm. He didn’t offer it for sale; the wheat was for his own use. It was deemed to “affect interstate commerce” and thus within the scope of the interstate commerce clause. With that, a provision intended to remove power of states to tax each other’s goods and services and promote a free trade zone instead became a mechanism to nitpick and micromanage every last little detail, ossify existing practice, protect large players, give loopholes to the politically connected, and enable mass regulatory capture. It cannot be overturned quickly enough.

https://supreme.justia.com/cases/federal/us/317/111/

That would also invalidate the civil rights act, as the (similar) 19th century CRA was already struck down because the 14th amendment binds against discrimination by public not private actors. The reason why the modern CRAs weren't also struck is because they rested on the laurels of Wickard v Filburn declaring the CRA (this time) is about regulating "interstate" commerce.