I'm sorry, but this logic makes no sense. Should we wish he looked horrible "in shorts"?
You're obviously going by the assumption that Geno CANNOT improve, and maybe you're right. (In fact, if I had to bet money on it I'd agree with you). But you can't deny we have a better supporting cast/coaching staff than he's ever been given, and it's only his third year in the league. Why would we automatically "move on" when the alternative is Ryan Frickin Fitzpatrick? (Not Joe Montana as some have apparently begun to believe).
The biggest reason I want Fitz in camp isn't so he can automatically become starter, but so Geno has a higher bar to surpass to earn the starting job (don't think he'd have trouble beating Petty/Hack at this point). I can't think of a dumber thing to do than "root" for Fitz to get the starting gig . . .