Frankly, if a child somehow makes it into my home, and is left unsupervised long enough to work out which of the 7 remote controls turns on the TV and surround sound system, and figures out how to access Netflix - I’d say they’re mature enough to watch whatever they want.
Gold.
My kids are savants about media control systems. You don’t need to explain anything, they’ve got it figured out before they touch the first button.