If Usopp's story was important to Oda, the writing would reflect that.
I have no doubt it once was of major importance, but considering the fact we're 1156 chapters in without anything resembling a real conversation about where Usopp sees himself relative to his dream, his father, Shanks, Luffy and how all that - it's not even worth getting into just how poorly developed Usopp is.
Pre-skip Usopp was phenomenal.
Post-skip Usopp is a bad impression of Buggy.
Oda does not give a shit.