Roll your eyes all you want but this is honestly way overblown. Binge pacing is a real thing though, it's not like she's asking him to watch paint dry. I mean, come on, a 3 episode max rule? That's some next level control issues. You can't pause a show for a bathroom break without it becoming a whole production? My buddy's wife tries to enforce a "no spoilers" rule and we all just laugh at him. So what if you watch two or ten episodes in a row, it's just TV not a marriage counseling session.
Used to roll my eyes at stuff like that too. Then I tried watching a show with my phone in another room for a week. Actually had to pay attention, and the whole thing was way better. Turns out a simple rule can fix a dumb habit.