Sorry for correcting you, but the Eritreans were not „invited“ by the Dutch government. They came as asylum seekers (some call them „invaders“).
With other Muslim groups in the Netherlands, such as the Indonesians, the Moroccans and the Turks, it was different - but no different than in the rest of the West, where it was a) assumed that they would assimilate without much ado, and b) that happened in the Sixties, when Islamism as an ideology had (largely) not yet unfolded its deleterious influence.
Needless to say, hindsight is always 20/20…
refugees fleeing their govt are expected to flee to the next closest country of safety... not travel a quarter of the globe to get better social services.
at that point, they’re invaders... but if the country they’re invading doesn’t stand opposed to them being there, they might as well have been invited.