When I do that sort of A-B testing I aim not to piss off the 50% that chose A when my research tells me that B is the one to sell ..
They don't have a dealer network and the internal sales and delivery people have no visibility about the decisions taken by the great magical black box in Fremont that makes pricing decisions and assigns VINs.
Tesla are not very good at communicating changes in directions or softening the blows, I'll grant you that. You should have seen the chaos in Germany with the RWD/LR orders, foisted upon the customer base the least prepared to take it all with a Zen attitude. My ordering process was not exactly a bed of roses either, requiring nerves of steel and a lot of patience...but I never got angry: never attribute to malice what can be explained by mere incompetence -- or said more charitably, growing pains.
A lot of this is caused by the fact that Tesla sells first and only
then builds the supporting service and delivery infrastructure. And they have to, growing at the pace they're growing.
If you don't want that, then you have to wait for one of the established players to come up with a competing car that's as good. Audi and Hyundai were actually in the running despite my Model 3 reservation, but both of them messed up even more than Tesla did (unreasonable delivery times for both, poor efficiency, range and user interface in Audi's case). Perhaps that in 2021 I'd have ended up with an ID.x, but perhaps by that time the Tesla Model Y might would have been more interesting and Tesla's teething problems might not be there anymore either.
Yeah, once they are more demand constrained than production constrained a lot of it is going to have to change.