Nah, I didn't say that you couldn't play TB. Therefore the statement wasn't meant to be formal "proof". But one of the game's star features was the RT mode, and the game was set to RT by default. You could play with your monitor shut down, too. But I don't think that's what the devs had in mind. )
And no, BG isn't meant to be played with a quarterstaff, because that was part of the game itself, not the settings that control how the game works, unlike the RT/TB switch. That's not my logic. It sounds more like your "special brand".