It forces you to think that Jolla hasn't offered yet to pay for those built tablets. The factory just wants to make money and not lose any money.
I'm not defending their actions. I know how businesses run and if you were sitting on top of 2000+ devices that are sitting there, gathering dust and whatnot, I'd sell them too. And without a sticker on any logo - why lose even more money? Why would you do after you've waited a reasonable amount of time?