Honestly I think he did fulfill what you can reasonably expect of him. He doesn't have any giga explosive movement or striking, not elite grappling either. Decent skills all around but nothing that really screams champion. In a division with Jones and Glover though, definitely no surprise he didn't get a title (though he could've gotten the Jones DQ ironically). Getting top-5 fights and a title fight imo is fulfilling expectationsAnthony Smith.
This is a guy who has so many tools, but often seems to avoid a path to victory through either standing still or walking into his opponents strengths.