I disagree with this, just because I have a low rep doesn't mean I can't ask a great and / or a useful question. That just denies low rep users to getting their question seen. Just because a person hasn't gained a lot of rep doesn't mean that they don't know what they're doing, there just new.... I only have 500 rep does this mean my question isn't worthy; furthermore how am I supposed to get better/ gain more rep if no one ever looks at my question.
EDIT
To borrow what Robert Moir said what if Linus Torvalds joins today; he asks a question.... he's qualified to be here but he has the same starting rep as everyone else