The Netherlands been claiming land from the sea for centuries and some areas are already below sea level - I don't think they'll neglect their dykes any time soon.

Since the 1400s; ref polder: https://en.m.wikipedia.org/wiki/Polder and https://en.m.wikipedia.org/wiki/Land_reclamation_in_the_Neth...

The Afsluitdijk just got heightened and reinforced. As someone who's biked across it, I'm psyched because now you can bike on the North Sea side - previously, there was only 1 bike path on the Zuiderzee side.

https://theafsluitdijk.com/projects/dike-reinforcement/how/

But we're also a river delta, we will run into problems long term because we'd have to pump entire rivers over the dykes.

Also salification and other problems with only pumping out all the time.

Maybe next century, but not anywhere soon.