> This is definitely not true for poorer gifted students:

I don't think that's as big of an issue because kids have access to teachers, libraries and the internet.

> Gathering gifted kids together, instead of bunching them with lowest common denominators, can result in lifelong friendships.

Kid's together creates the opportunity for friendships. Focusing too much on academics at a young age will miss key milestones for social development. It's particularly acute for high functioning autistic kids.