Fair enough, I think this kind of music and/or bass playing (take your pick) is very easy to dislike but the point has been pretty well laboured now, like Jaco, hate Jaco etc.
The facts are that the guy was an extraordinary musician, arranger and bass player. I think often we can try too hard to dislike music that isn't to our tastes but in reality there's always something to be gained even from the music that we can't stand... even more in this case as we're all bass players. Not every one of Jaco's live performances is necessarily to my tastes, but then neither were Jimi Hendrix's - and yet he had a profound impact on the future of his instrument and indeed the future of a lot of music. Just take music at face value and enjoying it becomes a lot easier.