sonofgloin, I think non-discriminatory immigration is irresponsible and disrespectful.
Whether these policies were created by naive idealists or for more sinister purposes is almost irrelevant.
What matters is the *end result*, whatever the intentions.

The end result is a society or community that cannot even be a 'society' or 'community'.

The only reason it's held together so far has been the remnant original populations and the momentum of past achievements.
This 'coasting' can only last a short time.

What is going to propel us further when there's no sense of connection between people anymore?
Kinship has a psychosocial power that is totally ignored or underestimated today.

If immigration had been restricted to related peoples, the 'diversity' may have been beneficial (like hybrid vigour).
Unrelated peoples together just create chaos, meaninglessness.

Community is impossible in the short term and extremely difficult in the long term.
Utterly reckless and unnecessary, whatever the intentions were.