You seem a little short sighted, so let me help you look at a scenario that will help you answer your own questions.
-The Model 3 competes in the luxury segment.
-Luxury segment people tend to not to work on their cars very much, so they rely on paying someone to fix them.
-Luxury cars also tend to be not so durable over the long haul.
-Luxury cars tend to have very high repair bills as they age when they start to fail.
-Dealerships of luxury cars know all of these things, and they make a good business from telling owners when they come in for an oil change that their luxury car, while still driving ok today, is in dire need of major repairs for many thousands of dollars, but if they would prefer, they'll make them a deal on trading in the car as-is for a new luxury car.
-Those luxury buyers may decide they want to get off that train, sell their car before it blows up to get the most resale value, and try something different.
-So they go on Tesla's website, read what Tesla writes on their website, order their car with expectations set by Tesla, talk to reps from Tesla, and believe what those reps tell them because no one told them in advance that Tesla can't be trusted.
-They sell their car, while the selling is still good (before it blows up) because they foolishly still believe what Tesla told them is true.
-They get excited about saving $1875, because people with a lot of money often have a lot of money because they don't blow their money and they value it, and $1875 is a few really nice meals, or a good chunk of a vacation, or even 94 laps of really good fun at their favorite establishment.
-Then when they are told by Tesla they aren't going to get their car for an undetermined amount of time, they panic and buy another car because they find it easier to believe that Tesla won't get them the car very soon after their experience above, and are surprised when Tesla says "just kidding again!"
HTH
OP:
1. It's your fault for waiting until the last minute. And if you can pay for a Prius in full, why are you so worried about an $1875 tax credit?
2. It's your fault for rushing out and buying a PRIUS.
3. Why did you rush to sell the old car before getting the new one?
So you could have a Tesla, but now you have a Toyota.
So it's all your fault. Not Tesla's. It's the end of the quarter, they are in a huge rush right now. You know this.