Haha, yeah, I do actually keep an eye on what they are watching, they just get up early and bang out a sneaky TV session. I trust them to select the right profile, and they always do, it’s just a feature I would have thought that Google would have added. You look at all the other apps, netflix/Disney and they all do it.
For a CCTV point of view, cheep Chinese ip cameras that have poe and are blocked from the internet (own vlan), having them run via frigate with a coral you should be more than enough for you.
You can the bundle this and all your other home smartness into a home assistant server.
Job done.