Update on this: YouTube still won't let me transmit live from my iPhone in their app, despite having over 100 subscribers AND a published short... but it turns out the YouTube desktop web application lets me broadcast live just fine, and I can use macOS continuity camera feature to have that broadcast using my iPhone as the microphone and video camera
So all set for Wednesday! I'll be carting both a laptop and a phone
@simon It can take between 4 and 6 days for any change to happen. When I passed the 4000 hours and 1000 subscribers, back when, it took them six(!) weeks to even allow me to apply for monetization.
Hang in there, might be opened by the time that happens.