The version on her tumblr seems to have edited the line to say "turn on" instead of "open" (also has an artist watermark). The author is Québécois, so might be a regional and/or French thing.

Noticed that, too - the best guess I had was that it's like opening an app on a phone or tablet. "Smart TVs" are just glorified huge tablets that run apps like the smaller versions, so you "open" an app to watch TV, too.

maybe she's part of the trans engineering subgroup, we do love to open stuff up xD

Because that's where all the tiny people that act out the shows you watch live. Sometimes you gotta open it up to feed them, change their litter, etc.