If I take R’ Millers words at face value, there is no reason for me to keep any mitzvot AT ALL. After all, I have no chelek in olam haba. And I’m not planning on getting rid of my TV.
I don’t think you realize how many people have some version of a TV in their house. If you have internet access and don’t filter EVERY website that has a tv show posted, you essentially have a TV. I know plenty of people that “don’t have a tv” and keep up with the latest shows in the internet.
I generally watch TV while folding laundry. Or knitting. Or sewing. Or washing dishes. It takes me through boring household chores when my husband is at minyan, learning, doing other household chores and the kids are sleeping.