Counterpoint: I just return from a 7,000km trip across Austria, Italy, France, Spain, Germany, and it was fine. No problems at all in France and Germany. I had to drive slightly slower in one part of Italy to reach a SC (unplanned for detour). I drove 1,500km in South-West Spain where there are no Superchargers, charging at hotels or non-Tesla public stations. I added 30 minutes to the journey, once, because I preferred to charge at a nice restaurant and not a (charging-equipped) gas station.

It requires extra planning, yes, but I was actually surprised how it wasn’t constraining. YMMW obviously.

BTW, that 600km range is very theoretical. The real range of 85D is ~420km (driving at 110km/h) and while P100D has better range, it doesn’t have 50% better range.