I think it has more to do with how many selfies are being taken, than the fact that selfies are being taken.
It's one thing if you only take a selfie for a profile picture, or so you can remember how you did your make up that morning for future reference.
It's another thing if you're taking 500 selfies because you're just that vain.
Why do you assume people who take a ton of selfies are dumb? Vanity does not equal stupid, and anyways don't you have to be pretty vain to make a post like this what with a superiority/god complex.
It's one thing if you only take a selfie for a profile picture, or so you can remember how you did your make up that morning for future reference.
It's another thing if you're taking 500 selfies because you're just that vain.
And HOW???