Sheldor the Conqueror

[SpaceAnJL]

I honestly believed that vintage Sheldon had more potential on being a real and better man than any of the other guys in the show and was also way more attractive in both looks and persona. He was confident, independent, talented, passionate, determined, loyal, honest, classy, and on occasions was even a gentleman. But now thanks to Amy now he's becoming almost as insecure as Leonard and as hopeless as Raj.

And there you have the entire reason for his deconstruction. None of the showrunners wanted him to be these things, either because it was alien to their concept of what a protagonist should be, or a tantrum because some of the audience didn't like their actual Underdog Hero.