I view part of basic functionality of level five as "Can the car drive on all roads in at least some circumstances?"

That's still not sufficient, because it needs to do that in all circumstances (vehicles, people, animals, stuff, weather, etc), but even if it can handle all the circumstances (also basic functionality), if it can't at least all roads, then it's not level five.

Right now, it's level two, and it's IMO going to be level two for a while. People can ask about level five, but I take any statements about Tesla's current autopilot and/or beta as statements about the level two system.

People can assume that those statements are about some future level five system, but I don't think that's an accurate assumption unless someone from Tesla says autopilot and/or the beta is now level three, four, etc...