@contrex,
"Always be sincere, even if you don't mean it." (Harry S. Truman)
Seriously though, you reach a rather extreme conclusion and unwarranted condemnation, I think. I would agree that women prefer confident men to those lacking confidence. There's seldom, if ever, been a man in battle who who wasn't "scared." But there's still a difference between brave men who will resist notwithstanding their fears, and the cowards who cut and run at the first sight of potential danger. Standing and fighting might "appear" to be fearlessness, but it aint.
Call the "brave" men insincere if you want. I wouldn't. And, even assuming they are 'insincere," I say "good for them."