>


on the other hand this should theoretically be more difficult to undo for future legislators.

Nope. Not in the slightest. This is an entirely symbolic gesture that changes absolutely nothing but some of the wording, and arguably weakens the overall constitutional ban on discrimination by being specific about certain subjects.
While it might still be nice as a purely symbolic gesture, there really is no practical change to speak of.
"Discriminatie op basis van godsdienst, levensovertuiging, politieke gezindheid, ras, geslacht, of op welke andere grond dan ook, is verboden."
It kind of is there already no? >

It was already illegal, but it's now in the constitution. On one hand it's a mostly symbolic gesture, on the other hand this should theoretically be more difficult to undo for future legislators.