Comment by jeroenhd
One Dutch party in the previous government tried to outlaw carrying more than €2000 in the street. As far as I know, that law didn't pass. Plus you can keep as many cash reserves at home as you want (but good luck getting any back if that gets stolen).
However, there are rules that make cash less useful for large payments. Cash payments over €10000 (€3000 starting in March) are outright banned without involving the government.
There are more practical problems than "I just really want to buy a car without giving out my bank account", though: more and more Dutch stores have stopped taking cash to reduce the risk and losses of robberies. You can still carry cash, but spending it may require some research ahead of time, and not every business is interested in the overhead of going through the money laundering prevention system when normal people usually just buy >€3000 stuff through their bank accounts.
If anything, the Dutch government has been telling people to have cash available in case of emergencies after "geopolitical tension" (read: the Russian invasion into Ukraine). Not that anyone seems to listen, but they encourage having cash reserves. They're still working out an exact amount to recommend, but a couple hundred euros seems to be most likely.
Can we note the absurdity of one part of the government banning too much cash, while another part of the government notes that some cash is essential?
Also, prepper realism: a week's worth of cash at hand goes a long way towards handling the most likely disaster scenarios (which are all well short of Road Warrior).