Have you considered that perhaps your very strong anti-tech views are actually making their "rebellion" stronger? Whenever my parents went to block things, that turned into a "how can I unblock this? how can I get around their limits?"
Have you really sat down and discussed why these are in place? What's the issue with Minecraft and Terraria videos that make it a Constant. Battle? That seems quite harmless.
I would hate having you as my parent, to be completely honest.