There was a similar "order site" hack back when we were waiting for delivery of our car. I can't remember precisely, but there was a way of finding some hidden status info in the JSON.
I'm extremely suspicious of his conclusions -- particularly the one saying there are tons of RWD Long Range cars just sitting around for... reasons. It doesn't pass the sniff test. They stopped making them last year -- he says October, I thought it was even earlier. You're telling me, at the end of the summer, when they were just catching up with demand, they discontinued the LR, and just haven't bothered to try to sell any of them since then? Nobody's willing to pay a few thousand more than the MR for the LR battery? Nobody's willing to save a few thousand on an AWD LR, by dropping the 2nd motor?
Let's be really clear here -- Tesla is NOT SELLING an RWD LR 3 in the US at this stage. The claim that they have them in inventory but aren't selling them just beggars belief. To what end? To drive slightly higher margins on the AWD LR 3? At the cost of having inventory just sitting around rotting?
I also wonder if he's sure they're US cars. For 3 weeks solid I saw at least one transporter full of Euro-spec 3s going up 101 to SF to be shipped overseas. Some days I saw 2 or even 3 transporters, which is impressive since I only spend maybe 30mins a day on 101. I'm sure as US demand softened, they built up inventory of cars to ship to Europe where there's still pent-up demand, so maybe that's what the inventory was?
Clearly the tweeter is claiming demand is so soft that they can't sell them, and I certain't don't think this purported excess of LR RWD inventory holds water.