I fail to see how moving to a place with better benefits is either one of those things.

Isn't that the reason that pretty much everyone moves? Better jobs, better schools, less crime, etc...

I guess it can be seen as egotistical and selfish if you're the kind of person that doesn't like anyone to build housing that spoils your view. The NIMBY archetype

I'm assuming The town/state people are taxing themselves to provide affordable education for people in their community, not for random exploiters.