the "Learn more" link takes me to a support.mozilla.org page which talks about "cookies and site data"

Just yesterday Firefox on my phone asked me if I wanted to allow a site to access devices on the local network. I wrote the site. I have no idea what the site is doing that would prompt Firefox to ask that. Bring back software that actually tells you any salient details at all!!!

@hailey I've seen a LOT of websites recently asking for permission to see other devices on my local network, and I've always been like, "uh, no??"