Let's just say that Jaco got professional medical treatment in line with what a high-profile business professional or business executive would have access to... That he had the good fortune to participate in an industry that valued him and his talent instead of feeding him through a human meatgrinder. Or you can believe in the magical and fantastic world of artists who's psychosis is somehow integral to their greatness, or understand that it is a valuable lie told by music industry rapists who laugh all the way to the bank. The crack pipe jokes are funny, mainly to people who either though their employer, or mommy and daddy, have access to real medical treatment options. They get to pretend that Jaco was some kind of party animal who didn't know when to say when.
Your bass. That is what you want to hear. He would play your bass if he somehow managed to live through his mental illness, and his desperate life of inadequate self-medication with street drugs.
And now, back to your regularly scheduled campfire!