And as far as television, there would need to be a television in the home for there to be television watching. I’m not planning to buy one, and I don’t feel guilty about that.
Who said you bought a TV, I just said they were watching TV (Or Netflix) an 18 year can have their own money and spend as they want. They could have a TV or netflix that you did not purchase
A non shomer shabbat kid is going to do something Mechalal Shabbos either in front of you or behind your back and what if the kid says to you I am going to watch a movie on Netflix and if you dont agree , I am going “somewhere else”. No he wasnt Mechalel shabbos in your house, he was Mechalal shabbos elsewhere