The opposite is true - the most common complaint from high-rep users, by far[0][1][2], is that there are too many garbage questions and not enough moderation.

[0] - https://meta.stackoverflow.com/questions/252756/are-high-rep...

[1] - https://meta.stackoverflow.com/questions/324072/how-to-lure-...

[2] - https://meta.stackoverflow.com/questions/324243/the-life-of-...