What a stupid argument.
I guess Torchwood was ok even though characters were introduced only so the Cap'n could have someone strange to bang each week. I mean, it's not sexist or cheap or just selling sex because he's bi...and...well, we all know bi people are more open minded and moral...or...something.
Hell, Cap'n Jack was a complete man-whore who ****ed more aliens than Kirk. I'd bet Jack has ****ed both a tribble and a Zorn-zilla...