I _suspect_ the impetus here is slightly different. Reading the linked blog the driving feature of this request seems to be more one of "re-asserting ownership and power" than one of "purifying and isolating cultures and bloodlines". And there are definitely reasons for people to want to assert their value and ownership. That said, I think the end result will be a more _literal_ erasure of these cultures as reminders that anything was here before the Denny's was erected are removed from common culture and parlance. But maybe a "smaller, purer" awareness is what the instigators want?
Re-asserting ownership and power is, maybe somewhat not completely obvious, exactly how the far right historically branded their calls for cultural isolation.
