Well, "a few hundred miles" is reaaaaally long way when you have to walk. I'm talking a really long ways away. Second, those drow were added to world by the designers because of Drizzt, so I find it silly to characterize that he then in turn doesn't fit the world based on elements that were added because of him.
To be honest, I don't think Drizzt would be confortable around those other drow. He already has a home, a group of friends, and has found some measure of acceptance. I would go so far as to say that it would be out of character for Drizzt to just run off with those other drow 'simply because they are there.'
Drizzt spent a number of years in Waterdeep. And it's not a question whether or not he'd feel good about them - it's simply not believable that he spends so much time in angst and self-pity about being an outcast when he should know that there are lots of other non-evil drows around.
That he muses about so many things, but never about other good drow is rather silly, and strnweghtens the perception that he doesn't really develop, or change.