Also worth noting, there’s a recent Supreme Court case that possibly threw out that particular rule about guns and drug use. So if you push it, decent chance it gets wiped away anyway.
There’s a lawyer I’ve read who has a refrain that a lot of folks focus on what they want the law to be rather than what it is. That’s in part because what it is is both often confusing, adhering to its own weird logic and in some ways deeply unfair. The issue is, it probably isn’t deeply unfair in the way that aligns exactly to your priors (the priors usually being, my ideological enemy is of course getting away with everything).
And trying to really learn, understand how or why things operate as the do is hard, time consuming and bleak. It’s easier, and to a degree more fun, to find the tidbits that make us mad and get mad about them. Like, without a print out of someone’s actual record, making any of these judgements is somewhat speculative.