What is it about European (Especially English) soccer (football) fanbases that lead them to develop complex and clever chants to chant at games? Why have American fans not picked up this tradition?

The Americans have no lives, Europeans do
The only sport worse than Football is Handegg AKA American Football

As much as I normally disagree with Spenglerian Traditionalist, his explanation makes more sense than yours.

I guess out of a lot of devotion to their team.

AL WIE DA NIE SPRINGT IS N-VA

Belgian, what does this say? something about not jumping and Flemish Separatist parties?

>"soccer"

ahum it was a chant used by the Flemish socialist party sp.a against the Nieuw Vlaamse Alliantie (N-VA) a Flemish liberal republican party. It received news attention in Flanders when they showed it on the news on a report about labor day (1st May). https://www.youtube.com/watch?v=_q7Jp0t3g4c