I already talked about that a bit there, but pretty much the same reasons as Jocchan.Sort of interested why it didn't click with you.
Although there would be some other stuff... Such as Araki now shamelessly recycling entire scenes from his favorite movies and turning them into backstories (still can't believe he ripped off the watch scene from Pulp Fiction, and played it straight, and that was for the Part 7 boss... what the fuck)...
Same here, and not just for Steel Ball Run either: from what I've seen on Japanese boards, my assessment of Parts 6 to 8 is hardly atypical, and yet, on English-speaking boards like this one...overall I'm fascinated by how much English speaking audiences seem to appreciate it.