If we agree that the definition of doesn't exist means that they have not shipped a single one to a customer (except one unit to a developer to help finish their software - but that's a whole different can of worms), then yes, it doesn't exist.

Whether they will exist is a topic hotly under debate.

But neither of that really matters, because the fact is, if you order one and if it ships, you will probably not see it until the end of this year since there are thousands ahead of you since they began pre-orders last year. By then, difficulty will be sky high and the prospects of a reasonable ROI is slim to none.