He's had some really good moments because of his great athleticism, but he really should be a CFer. Aside from the brief moments we've seen from Story, we have really mediocre to horrible SS play over the past decade or so. I think that's why we overstate some of the plays that Rafaela has made. He makes some plays that an average SS would make and Red Sox Twitter (and elsewhere) erupts at how amazing it is and anyone who disagrees "doesn't know ball."
If he stuck at SS, he could be an average to above average SS. However, they tried him out in CF and immediately he showed instincts that led them to believe he could eventually be GG caliber. If he plays a single game at SS in 2025, it's a waste.