Most Helpful Guy
*sigh* Again with this question. What is "smart"? Define intelligence. Chances are you can't, because science has no way to measure intelligence. The IQ is simply a vague measure of academic intelligence. Some definitions say that intelligence is adaptability. There are so many theories on what intelligence is. There's a theory that there are 9 different types of intelligence.
So when you say "smart", wtf are you talking about? Well. You're talking about your own, personal, *subjective* idea on what is smart and what is not. And everyone has that personal, *subjective* idea on what is smart and what is not. What is frivolous to you, could be genius to someone else.
And I'll say this right now. You are a fucking idiot. Why? Because literally everyone is a fucking idiot. We are not infallible. We are not omniscient. We have skills and knowledge in various, finite areas; but even the smartest of the smart, the most genius person that ever existed--lets use Einstein as an example--was a fucking idiot when it came to pretty much everything else. So while you might see someone as a moron, they might have other types of intelligence in other areas that you do not have, yourself.
On to attractiveness. Attractiveness is measure by personal experience, facial and body symmetry, shared genetic structures: i. e. "chemistry", societal standards and influence, and a bunch of other shit that I don't feel like typing out. One quality is not the determiner, despite attractiveness being the initial eye-catcher, so to speak.
Further. You just said "all these dumb men and frivolous girls flirting with each other." So, to be more accurate, your question should have been "is smart sexy to dumb people?"
Most Helpful Girl
So there's this thing, called internet forums? This thing you're looking at, like, now.
99(.9) percent of it is... smart people wasting time bantering about frivolous sh*t.
The real world isn't much different, except it smells a little worse.