Funnily when you see such projections in non-White countries (e.g. Kashmir) the same people pushing the replacement here suddenly turn militant for the right of the natives to a homeland that is specifically theirs.

Ultimately, the final recourse in all of these questions is de facto violence, when all else fails- your homeland exists so long as you are willing and able to defend it. We have politics to keep us from the state of nature, but democracy demonstrably fails when you don't have one 'demos'. I pray that the course is corrected before it's too late and violence becomes inevitable.