I should have said stereotype. I don't want to assume whether it's true or not, so I left it as a myth.
But model minority, as I understand it, isn't particularly a compliment. It's usually a portrayal of a particular minority by the dominant group as an example of those who have "made it." I think "Asians" are currently our nation's model minority.
That isn't to say that their "group", in so much as Asians are a composite of diverse ethnic groups, hasn't become successful. But it is to argue that "Asians" only corresponds to diverse members our society has arbitrarily lumped together. That is, Chinese immigrants may have made it but that doesn't necessarily extend to Vietnamese immigrants.
The fallacy of this, of course, is that the dominant group attempts to use this as evidence that other groups should be able to "do what they did." This doesn't take into account a lot of other particulars, however, which I don't think I ought to go into in this post.
I think people can deduce for themselves whether claiming that, since particular members of one ethnic group have succeded, such propensity for success really extends to an entire "class" of people and even moreso to all minorities.