As a fellow dutch person that also travels by trains a lot, I get really irritated when people only complain. Sure, there are definitely fuck ups at NS. But I feel people completely write off the system because of them. I can’t remember the last time a train got outright cancelled (outside of extreme weather conditions in which I also wouldn’t be comfortable driving). There are issues with the system, those should be fixed, but that does not mean that everything is terrible.
But maybe it’s way worse in your part of the country, there definitely have been issues with getting enough personnel (as do all other sectors). So maybe we are both making our arguments from two different experiences.