Relations => multipolygon vs. boundary

Could it be that we tagged most of the MOIN and other relations in Israel wrongly?
Shouldn’t the most relations use multipolygon instead of boundary?

Links:
http://wiki.openstreetmap.org/wiki/Relation:multipolygon
http://wiki.openstreetmap.org/wiki/Relation:boundary

Do I understand it correctly?

From above link:

So I would not worry about that too much.