Curtailment is still rare though, but if we really run into the issue of frequently having too much electricity then surely investing in synthetic fuel production will be economical, right? I mean we'll have to do it anyway sooner or later. There will always be a need to burn stuff and fossil fuels will run out.
Also don't forget that with increasingly more EVs on the road and vehicle-to-grid technology (which should be mandatory in my opinion) we are increasing our ability to time shift our energy usage to better take advantage of the volatility of renewables.
I personally don't think we can ever have too much electricity.
Not really a new problem for the Netherlands whenever there is a problem the country tends to overreact with massive infrastructure spending. It hasn't been that long that brand new coal power plants had to be closed.