"A million" is quite the hyperbole. So let's just not do anything anymore because it might cause a permission popup? Or because some idiot might trust a scam website? That's your argument? Sorry, it's not a good argument.
>while the webusb spec is exposing you to potentially high risks of damage to hardware or data theft.
Please explain a realistic scenario where a website >that someone trusts< is going to "damage hardware or cause data theft".
I'll wait.
I don't care about someone's stupid grandfather that is going to find a way to get hacked one way or another - he's not a good reason to hold the rest of us back.