Yum!
"reaching for that Hershey's bar"
Rob, I'd think that your car as well as ggr's Pinky are outliers though; they were painted - still with water-based paint, but... - at Chilton's in San Carlos and not on the line at the factory, right?
They never told me where, but yup, the panels were trailered off somewhere, then brought back and assembled. Since the OP seemed to be concerned with survivability of water based paints, I think this is in that ball park. My paint is every bit as good as any car I have owned, and quite a bit better than some of the older types that required a clear coat or multi coat.
Then again, in CA, there is no weather, heat or cold, rain, hail, sand blowing or being kicked up from the ice. No bird droppings or tree sap. No rust even if you have a steel car. So we're not in that category.
Mostly, you gotta take care of it. If you wipe it off with a dirty rag, you will have swirls. If you send it through the car wash spinning fringe, you'll have swirls. If you hire a couple of illegal aliens to wash your car, guess what. My wife and I spray off Hersheycar and wipe gently every week. We are unjustifiably proud, and it drives so much better than when it's dirty.
And, I so much appreciate your continued approval of my color choice, from clear back before I even had it done, as I remember. It continues to be the number one comment from every person seeing it: "I LOVE your color". Tesla should pay attention here!