I think the rationale in bullet chess is that playing strategically isn't going to help and you're in less danger of getting checkmated. From that point of view

I think the rationale in bullet chess is that playing strategically isn't going to help and you're in less danger of getting checkmated. From that point of view, you might as well prepare for the endgame, so the best way to do that is to keep the king in the center of the board while connecting your rooks.