People accept permission prompts from apps because they conciously downloaded the app and generally have an idea about the developer and what the app does. If a social media app asks for permission to your photos it's easy to understand why, same with a music streamer wanting to connect to your smart speaker.
A random website someone linked me to wanting to access my local network is a very different case. I'm absolutely not giving network or location or camera or any other sort of access to websites except in very extreme circumstances.
"Please accept the [tech word salad] popup to verify your identity"
Maybe this won't fool you, but it would trick 90% of internet users. (And even if it was 20% instead of 90%, that's still way too much.)
I have seen it posed as 'This site has bot protection. Confirm that you are not a bot by clicking yes', trying to mimic the modern Cloudflare / Google captchas.
To be clear: implementing this in browser on a per site basis would be a massive improvement over in-OS/per-app granularity. I want this popup in my browser.
But I was just pointing out that, while I'll make good use of it, it still probably won't offer sufficient protection (from themselves) for most.