Little benefit comes from bad-mouthing a legend in public. Most people just default to 'no comment'.
I take no joy in saying this, and I heard most of these stories 30 years ago... but you asked.
I never met Jaco, he died when I was 10. However, I've met quite a few people who knew Jaco from the NY Jazz scene. All of them had an immense respect for Jaco as a musician, and most disliked him as a person. One has to understand, Jaco was severely mentally ill, and had a mammoth coke habit on top of it. He would flake on gigs, he would borrow gear from friends, and pawn it for drugs. By most accounts, Jaco wasn't a good friend, or a good bandmate.
Mental illness and addiction may explain Jaco's behavior, but it doesn't right the wrongs he did to people.
To answer the OP question: Jaco would play whatever he could get for free, or be paid to play. It wouldn't matter, he'd make is sound good.