It would be easy to make the case that a rigid monoculture isn’t optimal. That would be something stable but stagnant. We like stability but not stagnation.
It is actually the optimal situation, and the Left requires a constant stake of societal sickness, being a purely a negative or anti- phenomenon.
“Chicken Tikka Masala” is now one of the top BRITISH FOODS in the world.
They even eat it in India now, or so I hear.
Cf. Federalist 10
This changed when the Supreme Court started acting as a super-legislature.
Gay Marriage? Imposed nationwide upon the people by the SCOTUS.
Legalized Marijuana? Oh, we seem to be handling THAT as the Founders intended, state by state.
That possibility is a FEATURE not a BUG of the American system.
And THAT was in the 1700s! Today, moving states is almost trivially easy.
Have you been a resident of more than one US state?
We need a hegemonic culture that appropriates good things form other cultures.
The WANT a sick culture. If things are going well, the Left literally has no justification for its existence.
This allows the Left to point to the various evils that ALWAYS exist in society and DEMAND revolutionary change to “fix” them, although they NEVER get fixed.
Crime, for example.
Who could be against THAT?
Okay, but how are you going to do THAT?
We’ve had a war on for how many decades now?
How’s that going?
"THE PERFECT IS THE ENEMY OF THE GOOD.”
We can and should keep evils like crime and poverty at as low a level as we can manage, but expecting their eradication is INHUMAN and INSANE.
It DOES usually manage to FUCK UP the GOOD though.