Yes, the West is under attack from within. That people from the East take advantage of that attack is another matter. But the primary force destroying us, and trashing the real quality of our lives--however many the material advantages available--is the Egalitarian mindset you identify.
The ideological pursuit of an undifferentiated humanity is no accident. It is not the creature of naive or stupid pseudo-intellectual "Liberals"--the 'dysrons' who endlessly spout its platitudes. It is the creature of a deliberate pursuit of a World Government by compulsive Socialists, who have never really concealed their goals. (See, for example, the last three examples in Myths & Myth Makers In American "Higher" Education.)
In America--and I am sure in Australia, as well--this pursuit has also involved a deliberate confusing of the patterns of normal human identification. (See The Battle Over Patterns Of Personal Identification, and Destroying Cultural Continuity.)
Conservatives need to stop shying away from the issues involved. There is nothing wrong with trying to preserve your heritage. That is the most important purpose for any social order.
William Flax