That goes without saying. However, when the poster mentioned 400,000 incomers and people being housed on boats, he neglected to mention the fact that the vast majority of arrivals were Europeans. I don't think those Europeans were the problem he was referring to though.
The Netherlands had immigration of 400k, emigration of 180k. So a net increase of 220k, which is significant for a small country. About 2/3rds of the newcomers were from Europe, including 100,000 Ukrainians.