In the EU you would have to reduce your welfare state to that level for your own citizens as well. The ECJ says[0]:
> It follows that the level of social security benefits paid to refugees by the Member State which granted that status, whether temporary or permanent, must be the same as that offered to nationals of that Member State
[0] https://curia.europa.eu/juris/document/document.jsf?text=&do...
Hungary and Poland have repeatedly boycotted and vetoed the EU's migration policies. If this gets support from a country like NL, there is hope to change the EU's ill suited Merkel/Juncker policies on migration.
The alternative is right wing populists like Wilders winning elections in more EU states. Consider LePen's FN winning the French elections for instance. In the German government there is already consensus on a stricter migration policy in order to stem support for the far right.
Russia is also using migrants to put pressure on Polish, the Baltics' and Finnish borders. We shouldn't allow this.