No, that's highly unlikely in this case.
Oh yes, I figured it out by trial. Turns out PS4 in Rest Mode, when connected via TOSLINK directly, causes R-28PF to wake up as well. Not just my SONY Android Smart TV. PS4 does this way less frequently, though, compared to the TV. I see how the auto-wake (and auto-sleep) feature is useful but it works poorly with modern devices that operate in standby mode and wake up from time to time to connect to the Internet. Does R-28PF have a firmware that can be modified? Hopefully Klipsch resolves this problem somehow in the future. Or am I too hopeful? This is my first close encounter with Klipsch ever.