I don't consider myself a xenophobe but it feels somewhat strange the first thing I ask when interacting with the new servant class is "do you speak Dutch". It's already considered normal that the delivery guy or Uber driver is an immigrant.
Very few locals want to do these jobs and maybe there is something wrong with that I don't know.
Unfortunately, multi-tiered societies ("those people do THAT work") have been a thing ever since people got the idea to settle down. Maybe for a brief period of time, these tiers could be in entirely separate hemispheres, but things tend to diffuse over time.