The "if she isn’t into you, she might" line resonated with me as well. It reminds me of The Game. You only need to play the game if someone isn't into you; if they are, you can dismiss all of the rules (as I did when I met Katie, as you probably remember). And, by that token, if you're looking for an honest, mutual connection with someone you might as well just wear your heart on your sleeve (or your genitals, depending on your objectives) as the only additional people who the game nets you are the people you aren't interested in.
I agree regarding the protection nonsense. It's the delicate flower
argument. It assumes a level of helplessness; it's very disempowering.