Turing wasn't a publicly known figure for many years until a campaign to give him some prominence and highlight the injustices done to him started to get some ground. There was a strong gay rights thread to this, which obviously didn't apply to others.

While I agree others should no doubt get credit (Turing's coworkers also), the Computer History Museum and Bletchley Park do a good job (last time I visited) at describing everything relatively impartially. Media (screen and print) could often do a better job though.