Consider 2 URLs:

section=All-about-apples

section=About-apples-oranges-bananas-fast-cars-good-health-world-peace

Now ask "If I were finding sites that were about apples, which is most relevant? Who really talks about apples?"

One URL is focused and more likely to win that question, and that question is part of what search engines are doing when filtering the results.

Ask for more => you get less.