There's a certain personality type that sees activities like watching TV or reading a book as "doing nothing" and feel it's completely reasonable to just start talking to you like it's not interrupting anything at all.
My family has this tendency. It drives me absolutely insane. I can go three hours where I'm LITERALLY doing nothing, and the MOMENT I decide to engage with something? THAT'S when we need to talk about daily chores.
Glad to be moved out, but if that was my daily life for decades? I'd make lighthearted image macro jokes to not scream about it too.