Perhaps this all needs to be clarified in the NIP. I also have had trouble implementing AUTH. It still doesn't work consistently, with some relays or clients I use, even though nostr:nprofile1qqsqvcu68pkfcyq5y9mz9n9u7sys33835rpnuglc6mtg7j4lv40c7ugpz3mhxue69uhhyetvv9ujuerpd46hxtnfduq3vamnwvaz7tmjv4kxz7fwdehhxarj9e3xzmnyqyg8wumn8ghj7mn0wd68ytnhd9hx2erc6wa has been legit on top of things and trying to help me.
I'm not necessarily convinced that we need an extra notice. And it's been frustrating to see how slowly a relatively simple, important NIP has been propagated, and that might be due to a lack of clarity and completeness.
nostr:nprofile1qqs8qy3p9qnnhhq847d7wujl5hztcr7pg6rxhmpc63pkphztcmxp3wgpz9mhxue69uhkummnw3ezuamfdejj7qgmwaehxw309a6xsetxdaex2um59ehx7um5wgcjucm0d5hsz9nhwden5te0dehhxarjv4kxjar9wvhx7un89uqaujaz how is your AUTH implementation going?