This is a real worry these days. I've heard it from lots of lots of developers. The years tick by on their projects, and all they ever seem to do is add to their CSS, never remove. It's not just a feeling, I've talked with companies before that track hard data on this. Over five years of tracking the size of their stylesheet, and all it's ever done is tick upwards in size.
This could be considered problematic for several reasons:
- Files getting bigger is worse for performance
- The developers are afraid of the CSS
... read the whole story at css-tricks.com.