Prescott went from taking 3rd string snaps to starting. He stepped up and played well, remember - he was a rookie thrown in.
You would think that some fans would be more appreciative. he didn't get to sit and learn for 3 years.
And when Romo got his start - it was a playoff caliber team. Had he not screwed up, Dallas could have very well went deep in the playoffs going by the teams that advanced in the NFC.
Romo had HOF players to catch for him. Prescott had 2 at the end of their careers. All teams need great players around the QB, it's how the NFL works. It's not Romo's fault that he didn't have the current team, but it's not Prescott's either.