I'm not trying to beat you up. But, man, Jamerson was the foundation upon which many of the iconic bass players built their sound, style, and even choice of notes. I, myself, love to answer the question "Who taught you how to play bass?". The answer is always "James Jamerson and John Paul Jones".
It's not about complexity (although he was certainly capable of complex and melodic lines). It's about the ability to play EXACTLY what a song needed.... every.... single.... time. You can't teach that.
Don't get me wrong. I'm not saying you're stupid if you don't admire his work as much as I do. Far from it. Love what you love. You don't owe me any explanations.
However, just OBJECTIVELY speaking, Jamerson pretty much has to he on ANY Top 5 P bass players list for that list to have ANY credibility. Without him, it would be like a Jazz bass list without John Paul Jones or Jaco, or a Hofner list without McCartney, or a Stingray list without Flea or Louis Johnson, or a Fodera list without Victor, etc.
Like him or not, Jamerson influenced (and continues to influence) soul, funk, and even rock bass players all over the world.