Sure. That's a very generous interpretation. But I am quite certain OP does not mean "priviliged white dudes" as the issue with "multiculturalism". May OP can expand on what they mean exactly.
No it isn't a "generous interpretation". You seem to be taking very uncharitable interpretation while insinuating they are some sort of unrepentant racist. I am not sure why you are doing that. I find it extremely tiresome.
I deliberately gave examples where both groups were White Europeans so to avoid any conflation with racism. Otherwise the conversation is guaranteed to go nowhere as it ends up in accusations of people being secretly racist.
The problem is simply a clash of values between two disparate groups of people as they come from different cultures. The ethnicity of the groups is often irrelevant.