I've been in places where this would be a great deterrent for the endless meetings where slightly different groups of people need reassurance about the same things over and over again. Not that they're completely useless, but they're slow, low bandwidth and fatiguing. I wish some of those could have been replaced with a document like this.
Because nobody at YouTube has apparently ever encountered this problem, I ended up having my partner buy a family plan. As much as I hate paying so much a month for YouTube of all things, screen-off background play is a paid feature on iPhone, having one of the two accounts on your TV showing ads is absolutely infuriating and I'm not sure I fancy risking an account ban for anything they can associate with someone costing them ad revenue.