Perhaps Coinbase's eventual appeals will establish one, but I doubt it.
Is the argument that it did apply in those situations before the exemptions?
This is how the system works. "Code is law" does not apply to actual law; it's a long history of interpretation, wiggle room, precedent, legislative intent, and common sense being applied in various amounts. It works pretty well, all things considered; far more than trying to explicitly write down every little edge case.
I will note that this particular path is treading on the "lets write down every edge case." As such, it would be better to have a slightly stronger guideline than that. Specifically, when the law is "this test, except for specific carve outs that all fail the test", that is a pretty bad law. Unless there is some unification of the carve outs other than "we decided these don't apply."
Or is that largely considered a mistake in interpretation nowadays?