This doesn't really seem like something you would say. What is he wrong about in his comments? Tesla is lying to people about their delivery dates. They are also not delivering vehicles in an open and fair manner. While all of this is going on, they are completely shutting their customers off from information about why.
Is Tesla had said "We don't know, but when we do, we will give you a promised delivery window." then I can see your point. But when you order a car in November, and they tell you they aren't going to build it anymore, and then you order a new model, and they tell you that one is gone as well, and then you order the third time, and you wait 8 months while others are picking up cars in weeks, that's not exactly being honest.
Mocking someone for threatening to go to an inferior product does not invalidate their point. Tesla customer service for the ordering process is about as bad as it can get. No information, random meaningless EDD's, and a seemingly unfair way of deciding who gets a car.
If they say an estimated delivery is 10-14 weeks, and it doesn't happen, they should explain why. They could just say the estimated delivery is a MINIMUM of 10 weeks, but that doesn't get as many people to order one. They know this.