Failed? They delivered, I know it is hard to tell the difference. You really have a bone it seems. If they fail and close shop will you post: Haha! Finally, told you guise! What's it to ya really?
They announced delay, fail in your book. Now they don't have review devices, again fail guise??? They will dish out review tablets when ready, probably soon(tm), don't think you are the concerned backer, so what? They don't owe you anything, people who count on good tablet and invested don't seem to share your rush needs/wants, but they wish them well

edit: and to be clear, I paid, and don't need nor ask for rush, can wait longer for better product, no idea where this: money paid, now rush, you my slaves now, did you ever back anything? does not seem like it, crowdfunding is not a shop, it is for making something you want to have a chance to happen, no rush, no angry customer relationship, I DEMAND review copies yesterday