

A valid point, trackers often give you a certain amount of upload credit for free, and there are often other ways to earn those credits too, so all users’ ratios would be above 1.0, but that should have read “A closed group of users can all have a seed ratio of 1.0” if we’re looking at just the data transfer itself.
Do not respond by playing loud noises back, no matter how tempting, that’ll just give him the chance to say “see, they’re the ones doing it”. Going away for a break might be a great idea though, just to get some rest and relax a bit. I’d suggest putting up external cameras covering the whole property, and internals covering doirs and windows first though, just in case he does anything harmful. I know you said he was frail, but you don’t want to take chances.