I don't understand the point...instruments are tools for creative expression. Find the one that works for you, in whatever context that is. For a lot of gigging musicians, that means having a P or J bass in the toolbox, for all of the good reasons others have given in this conversation. I can't get along with a lot of top-end basses, for various reasons...it's personal preference...but P and J basses are different. For a lot of BL's and sound engineers, it's like waiting at the station and a train comes. Good news, because that's what they expected. If a bus pulls up on the rails, this is an unexpected and probably unwelcome development. It could be a really nice bus...doesn't matter.
Just my opinion....and I do use a J bass most of the time on rock/pop/country music.
Not jazz though....