This comment makes apology for grifting, and a good case for bad-faith dialogue - whether to troll, to be unreasonably contrarian, or otherwise.
They gave their money for a Cybertruck, and the liquidity from those reservations was most likely use to posture company assets/P&L, earn interest in a treasury, and whatever other financial weasel techniques that the lawyers and financiers of the world's first trillionaire - Elon - have in mind to use.
Customers didn't get that, and instead had a hold on their money for reasons and means BEYOND receiving the particular commodity that they offered their money for. Forget the pro-regulation and antitrust crowds being discussed in this comment section, you'd be hard-pressed to find even a Laissez-Faire economically-right individual that sleeps well to that notion.
As far as I'm aware Tesla has always been very generous with refunds for deposits, even for cars that were produced. For the model 3/y/etc they would let you cancel the deposit if you pre-ordered and just no longer felt like buying it, as long as it didn't enter production yet.