I would hazard that many red flags--"obvious indicators of danger" are much more clearly seen in hindsight or out of context--these red flags might not have been quite so obvious to these women in abusive relationships. Using words like "ignoring" implies active agency on their part.

This type of statement strikes me as being a very likely reason "normal male" was used as a descriptor. If she allowed herself to be put on the stand for "failing" to see the warning signs, then, in a potential critic's mind, she might be implicitly bearing partial blame, and thus her message might be safely ignored (not that I agree with that--I'm merely stating that this is a common attitude that could easily be expected. "She didn't get out so she's partly to blame for being abused.") To avoid this, she hastened to point out that there was no way in which he did differentiate himself from other men, no "red flags" she'd missed.

More simply, a strong aversion to a common trend of blaming the victim and a desire to skip past that part of the critique.

I am making no statements about you in particular--merely that that's an easy interpretation of your comment.

Plus, there may be many bisexual men specifically looking for a partner they can breed with. Based roughly on barely remembered male fertility age statistics, I'd guess men would be most interested in fathering children in the 25-45 age rage, and there does seem to be a bit of a hump in the data in that range.