I think if I were investing a few million into something, I might ask "what's the battery life?" or "Can I try it on my hand?" before coughing up the cash.
But then, I'm not a VC. I guess they go off vibes?
Those questions probably get asked, but long before any real product exists, so the answer is optimistic or just plain imaginary. By the time the real product exists, a lot of money has been spent and there is a lot of pressure to drum up hype for a product that probably doesn’t deliver.
You'd think, but VCs are lemmings and the moment you convince one to invest a clock starts ticking that makes thorough diligence difficult for everyone else.
Get one person to fall for 'just trust me bro' and the hype train follows.
But then, I'm not a VC. I guess they go off vibes?