It's available in certain countries in Europe, just not Australia yet. I'm not sure which other networks they include, but it would be a safe guess that there is a certain minimum standard, on number of stalls and/or charge speed - e.g. single stall 50 kW sites, like many of the ones in this grant round, probably won't meet that standard.
I recall reading once (of course I now can’t find the reference) that Telsa automatically added any DCFC that you actually charged at to its list of “fast charging” stations in your history, and therefore could use it in any future trip planning. But I’ve never seen that happen either.
The strangest thing that once happened was when charging at Chargefox Karuah 350 kW, I received Tesla notifications that my car would be charged soon and idle fees could apply!! It seems my car, or Tesla, simply could not believe that I could not be at a Supercharger if I was charging at 180 kW . But it only happened the first time I charged there, I never received such notifications at subsequent charging sessions there. Bizarre, eh.