I've had roomies that were in IT, and generally most things weren't "smart" appliances. I think the fanciest thing they had was a plex server. We all know how insecure the IoT is.
I've also had non-IT roomies and yeah, they were putting up surveillance cameras and shit and being super-creepy with monitoring.
I once very, very quietly tried to wash a dish at 1am in the kitchen (and most roomies conclude I'm a ninja as I'm generally extremely quiet to anyone who isn't hyper-aware of noises already), and my roommate charged out trying to find the water leak.
I realized later she had some sort of monitoring alert on the water heater that woke her up, and because the house was dark because I didn't want to wake anyone up with lights so her cameras were dark too, she went into a panic instead of using her common sense. I'd accidentally evaded half her surveillance trying to be a considerate roomie while I washed something quietly in the dark and she lost her frickin' mind.
The guy I rent a room from has an app on his garage door that alerts him every time it opens so now I have to answer for it every time I fucking do anything in the garage (which is the quickest way for me to go in and out of the house). It's so annoying. I got home 15 minutes early the other day and had a text from him 5 minutes later asking if I got home early. Like... Yea, fuck off dude. I'm about to start going in and out via my window.
Yeah, same lady that freaked because the water heater kicked on at night also had that on her garage. She was absolutely monitoring coming and going by it.
I sometimes contemplate how easy it is for people to be stalker freaks and despair.
The door in from the garage is closer to my room than the front door? Also I can avoid the kitchen/living area and not have a 10 minute conversation I don't want to have if the people I rent from are home.