Age doesn't matter. Time however does. While yes there are some that might hvae 500hrs and it all be great flying and nothing redundant the vast majority does not posess the skill level required. It isn't until you get more hours that you look back and realize how much you've progressed. I have 1800hrs and can look back at when I had 500hrs and can easily see the progression I've made. Hindsight is 20/20 but not foresight. Only when I'm at 3000hrs will I be able to look back at now with 1800hrs and see the progression I've made.

After having noted the progression made since 500hrs I can say with confidence they don't belong in a cockpit of a RJ. The best anyone of considerable low time can do is just sit back and realize there is still a ton to learn ahead. I consider anything below 2000hrs low time. So yes I'm putting myself in that pool.