Is there anything in a man's saying to his wife: "We will be held accountable for every minute, or you will be held accountable for every minute, so you must utilize television for what is beneficial to your religion"?

Your advice to your wife to make the most of her time, not to waste it, and to be keen on beneficial matters in religious and worldly affairs, is a good piece of advice that is legally مطلوب (required/desirable). It is part of good companionship, a requirement of qawamah (guardianship/leadership), and a sense of responsibility.