Seems you did not read the comment you were responding to. 180kmh it's no problem for the Tesla.
The issue here is that on very low SOC, the voltage is lower so for a given power, you need more current. At 6%, the amount of power is limited. So if you go very fast, and uphill, it can be too much power draw.
I am sure you haha experience an ICE car starting to rattle or shutdown when there was one 0.5l remaining in the tank and going uphill because the fuel is pumped on a location of the tank where there was no enough fuel? But it would not mean that the car could not run in normal conditions with more fuel, right?
I read the comment and stand by my opinion.
Many ICEs refuse to give low-end estimates at all, because they are not reliable - or inflate the low-end estimates to a safe degree. Tesla could do the same.
Showing 6% of range and then shutting down is not a very preferable scenario by any means. But then, as said, Teslas are not very good autobahn cars, so I am not really surprised it did this.
But also: I don't think this problem necessarily is a problem with Tesla's estimate algorithm, but an unrelated issue that causes a similar outcome, that could use better warnings. E.g. 12V battery issues.