This is the (re)opening salvo in the great "jump torpedo" debate. Summary:
1) Realistically speaking, in a world where self-driving cars and the like are happening at TL8, not only should biological sophonts not be required as crew, they should be considered hazardous to the smooth operation of a ship.
2) The Traveller esthetic is one which explicitly rejects pervasive AI, transhumanism, and the like, so to keep the feel you have to ignore (1).
3) Traveller canon has examples (e.g. "Leviathan", IIRC) of jump-capable fully autonomous vessels, but these don't show up in other places where they would seem a perfect fit (most notably, X-Boats). So canon is at best a poor guide.