So I just learned that apparently Home Assistant has absolutely no user account control. My roommate has no need to access the lights, electrical outlets, etc. in my room, and has absolutely no reason to be able to see my phone’s battery charge level and charger status.
I know it doesn’t inherently fix the problem, but unless they really go poking or messing with it (most users wont) it should keep them contained to the subset of options tou want them to use.