This... is probably the most rational explanation I've seen for national socialism. I'd heard it before, but putting it more clearly in prereq / competitive terms makes the most sense.

I think you're right that homogeneity provides the ceiling that the social economics can comfortably fit under. Unfortunately, not only has the tide of social policies gotten higher and higher, we are well past the point of comfort on the ceiling too. Conservatives would prefer high ceilings and low tide (so there is less possibility for mud and waste), but we can respectfully go back and forth with our neighbors about what the right level should be.

Unfortunately respectful disagreement is exactly what we've lost be trying to play the game of 'I'm not a bigot' limbo everyone is facing. It's not just cancel culture against both of us, they are going after the moderates just like they've been going after their own. But if you speak up and explain to a large community that fled the leftism that they should do some self-examination of their own leftism, they rage like I've never seen before.