Who said eevee in friend safari was special? The eevee in a friend safari is a wild Pokemon just like on route 10.
I'm guessing people think it is special because in past games eevee usually required you to complete the game or finish your pokedex and then you only got one of them. So in the past eevee has been relatively rare. It would be like having starter Pokemon in your friend safari.
XY is only the second game to give you eevee as just another wild Pokemon (The first being a hidden park in Black/White 2). So I think people just get excited about it because eevee was rare in the past and they forget it's not nearly so difficult to obtain in Gen 6.