(Sorry for the delay, UncleMeat)
While debatability is normal, that in this context of liberty the point of discrimination is "how and how much one's action affects others" - akin to the dialectic between "freedom to vs freedom from" - should be a trivial point, and at the same time is evidently something not clear in many.
Categorizing "speedracing under an influence" is not a hard exercise.
Edit: I am also seeing - and in the past 18 months the evidence has boomed -, a widespread inability towards the judgement of "why this policy", both in the affected public and the issuing power, including monstrous faults deviating from straight reasoning and display of shallow arguing (not even any more explainable by electorate positioning). I have seen a boost in lack of judgement. This is very ghastly - it is a return to the famed quality/quantity of discrimination in times of witch-hunting.