That would be the browser fingerprinting in action. I often get a lot of requests to use widevine on ddg's browser on android (which informs one about it) for I suspect similar reasons.

Interesting, I'm on Brave and have never had a site request bluetooth access before, so much so that I'd never even granted Brave bluetooth access, hence why it popped up as a system notification this time around.

Interesting. Is this fingerprinting in action? I have Widevine disabled on Brave desktop (don't recall if this is default), occasionally I get Widevine permission request on some sites.