James Proud:
* Promised an alarm clock that would do a bunch of things
* Took $2.5M in funding from Kickstarter
* Took another $50M in funding from elsewhere
* Delivered a piece of hardware that did essentially none of what was promised.
It's all detailed in OP and the linked Verge article. That's a scam and I'm not interested in your legalese arguing whether they can be sued or not.