I'm fairness, after 80,000 miles I've never needed to use "anything but a Tesla charging station". They're ubiquitous and very reliable, which is driving the switch to NACS in the first place.
I have needed them twice now: to drive up the Acadian shore in NB rather than following the TCH through the St John valley, and just last weekend the closest supercharger wouldn’t have let me get enough charge to get to the canoe rental, drive to the put-in point with a canoe on my head, and back — but the rental spot had 24 kW CCS, and there was faster on the way back to the supercharger.
I also try to use non-Tesla chargers just out of principle, but that’s not a need. Last time I used a supercharger was in the spring when I couldn’t figure out how to get the NY thruway chargers to work.