Wow... I wrote my own WebSub receiver and put it on an always-on server to get around the fact that I assumed YouTube doesn't have RSS from the fact that I couldn't find this information anywhere.
That is great, thanks. Got back into RSS lately and doing the ol "look for RSS link in footer and then guess at /feed" rigmarole every time gets old fast.
The screenshot of the RSS icon in the url bar brings back a memory I don't know if I had. Didn't Firefox used to do this by default or am I misremembering?