Could be that he got passed up, could be that he doesn't fit the mold of what Sark wants at QB anymore. I mean look at the QB's since he first arrived that he recruited vs the ones he's recruited now. Quinn Ewers from the portal, Maalik Murphy, Trey Owens. What do these guys all have in common? More pocket passing guys, not very mobile/athletic. Since then he's recruited Arch Manning, KJ Lacey and now Dia Bell. Who is the '27 target? Kavian Bryant. What do these guys all have? Mobility, athleticism, etc. Yet can still hit all the throws that Sark wants.
Just my take on it anyway. Don't think it's anything specific that Trey has done or didn't do, just think it's Sark going a different direction with what he wants out of his QB's and adapting his Offense to that.