You get the security of knowing criminals have their actions recorded, but you avoid the privacy catastrophe of being recorded 24/7 no matter where you go.
I think it was the CRIME attack on SSL iirc. Same issue is found across most consumer-based systems (including drones), pretty much anything that uses compression can run into this issue if care is not taken to pad. At least from what I recall about it.
Or how easy this footage could be sold or leaked?
Not making a pro-surveillance point, but fall detection bracelets are not sufficient monitoring for elders living alone. The fun starts when dementia rears its ugly head.
Choking, kitchen fires, gas leaks (no getting out of bed, so no falling), dementia compelling them to disassemble the house, dementia-induced hallucinations of intruders, dementia-induced claims of theft by neighbors and other helpers, and quick ability to verify/dismiss false positive alerts are huge selling points for cameras you'll wish you had if/when these shenanigans start.