Yes, but actually no. If the DEA or local LEOs
actually wanted to crack down, there is plenty enough wiggle room in the scheduled substances act and all the related add-on laws (esp. Federal Analogue Act), there is enough molecular similarity between the various cannabinoids, and insufficient sensitivity in most chemical tests, plus the tendency of THC-A to decarb (eject a carbon dioxide molecule to give THC) under heating, that these agencies could absolutely give you a hard time and make your life hell for a while. Even if charges didn't stick, you'd still have a bad time and be out thousands in legal feels.
What's actually happened is de facto, not de jure, legalization (in effect, but not in law), because of the unpopularity of cannabis prohibition. It's just not worth it in most situations to go after these products at this point.
There's still a strong need for actual legalization at this point.