I think that is how you define it for them. The thing is, and I've said this before, their system is quite transparent (unlike most places). Do some googling (or pubmed searches) and you'll see that it is obvious that they treat many many patients not in cardiac arrest.
Anyhow, 1 medic unit per 80-100,000 is ideal in my opinion. There are some places that have 1 medic unit per 20,000 - that is triple super duper ridiculous insane.
If EMT-B education was better, 1 ALS per 20,000 might be OK. But until then, I'd prefer to have more, not less, ALS. I've seen too many basics make absurd mistakes to think otherwise.