They did not invent in secrecy and zero budget a battery worth a Nobel prize.
This is a scam.
The slow drip of verification is a smart move IMO. It keeps them in the media for longer (Gabbo) and stops them from being lost in the other 1000 different battery announcement. Hopefully getting them funding I'm guessing they need to start full manufacturing.
That said, while this certainly is a promising battery based on the claims, I won't get my hopes up until there's an actual product I can buy.
I think stringing this out certainly has marketing advantages. But I think if they really had this kind of breakthrough they would be focusing on billion-dollar deals with manufacturers to ramp up capacity rather than internet hype marketing.
Some skeptics have gone much further than that, calling the Donut battery impossible.
The fact that they're taking their time addressing critics might just be an indication that they are making those deals. Time will tell.
I think if they were doing so then there would not be much point in trying to market to the internet at large.