I may be too hard on her-- I was doing the jump of assuming that if she really wanted to be happy, she'd be using more efficient selection methods, but that could be another of those bad advice schemas.

Actually, you're missing the part where her selection method may well be optimal, given her goals. She gets excitement, sex, and drama from the "jerk" boyfriends, and companionship, emotional, and other kinds of support from her orbiter(s). (PUA terminology for guys who hang around a girl hoping she'll realize he's perfect and stop dating the jerks.)

This is such a common thing that it seems evolutionarily optimized. Enough orbiters occasionally luck out to make it a viable minority strategy for males, and the win for the females is obvious.

It's only if you think idealistically ("far") that you'd even be surprised by the frequency with which this occurs.

(Also, one thing that sometimes happens is that the orbiter, after getting his lucky moment, actually becomes more confident about expressing his interest in women and quits orbiting them. Everybody wins!)