'Weyk' is old Dutch for 'wijk' (area/district) which is smaller than a borough.

In the town Sliedrecht there is also an area called 'Merwebolder' which is a small 'wijk' for mentally disabled people housing around 400 people.

It's just a name, you're reading too much into it. Katwijk also ends with "wijk" and is home to 60k people.

No "wijk" is the dutch word for a neighborhood of a few streets. Or a small block if you prefer. It just so happens a few towns used that suffix, a nimble expression.