I do not care an average persons quick attack on their credentials.
The reason being is that Fall Out Boy are a world class band.
I know this is an opinion which is strongly linked to fact.
Here are some fun lyrics that caught my imagination:

I keep my jealousy close,
'Cause it's all mine.
And if you say this makes you happy,
Then I'm not the only one lying.
(nobody puts baby in the corner)

I'm two quarters and a heart down
And I don't want to forget how your voice sounds
These words are all I have so I'll write them
So you need them just to get by
(Dance, Dance, Dance, )

Last summer we took threes across the board
But by fall we were a cover story "now in stores"
Make us poster boys for your scene
But we are not making an acceptance speech
I found the safest place to keep all our old mistakes
Every dot com's refreshing for a journal update
(Thriller)