One can argue about refugees, I myself see that critical, but we are in dire need of more regular migration for demographic reasons and because the general lack of work force in multiple sectors like health care.
Ethnic erasure is a crazy concept, we are mixing ethnically for centuries and who cares about color of eye or skin anyway? What we need is cultural preservation and coherence to some degree. So we should improve on refugee laws - which btw the green party had started before they were bullied out of government by the elites.
Cultural preservation is for museums when it can no longer be organically sustained. Coherence is as non-sensical as trying to preserve eye and skin color. Culture is mutable and always will be. You might as well try to stop the tide