I'm not necessarily "anti-spoiler" on all cars, but the spoiler that comes on my GTO sure is a homely/goofy looking S.O.B.. It doesn't scream "I have performance, look at me..", it screams "I have a poorly-styled, chunky, awful spoiler, look at me...".
Furthermore, anything that screams "look at me" goes down as goof-ball and laughable in my book. Good looks gets attention, period. SCREAMING for attention just comes off as desperate and insecure and posing..
It's like anything else, if you're a good looking guy with an athletic build and a confident attitude, you'll do well on the single's scene just being yourself. But if you walk into every bar wearing some jack-off Hugo Boss shirt, sun glasses, and a battery of gaudy gold jewelry, and scream "hey, LADIES, check THIS out!!!"... You can make yourself believe all night long that you're "putting out the vibe", that you're dressed up as manly as a man can get. But trust me...... You're not getting laid.... unless there happens to be a gal who's equally as cheese-cake as you at the same club...
Same goes for car styling... Walking softly but carrying a big stick always gets more respect. Big spoilers, stripes, overkill... it gets attention from some, gets laughed at by most.