How do you see it being abused?

Seems Chrome-only for now. But the spec (Working draft) has an editor from Mozilla as well, so maybe someday... https://w3c.github.io/mediacapture-extensions/#the-usermedia...

At the very least, Firefox's position on the similar <geolocation> element is positive.[0] I would assume their position for other permissions elements would be the same.

[0]: https://github.com/mozilla/standards-positions/issues/1288

This is literally how the standards are meant to work, at least on the JS side. The tc39 process requires at least two live implementations to exist before a spec can move to finished.

In this case, there's also people from Mozilla onboard, so there's no guarantee that it'll remain chrome only or that chrome will keep it if the spec doesn't go anywhere.

In fact, much of the web as we know it evolved this way. We have IE to thank for AJAX, after all.

Another reason why this is problematic is that their proposed standards follow Google's priorities for its own products, particularly Google Meet.[0][1]

[0]: https://developer.chrome.com/docs/web-platform/element-captu...

[1]: https://developer.chrome.com/docs/web-platform/document-pict...

I'm not all that happy with second chance options in the first place, but a dedicated element with protections on making sure it's clear clicking that particular element is going to second chance it is at least much less likely to get abused.