The law also applies to barter with equivalent Euro thresholds, so cryptocurrencies aren't excluded. Anyway, the point stands, financial privacy (from the State, at least) is not a feature of life in the Netherlands (or anywhere in the EU, with AML3/4/5/6).
It's perfectly fine to pay off your 900k€ house with cash in Germany which is why it is considered a financial haven for all kinds of organized crime.
> Germany
No limit on cash payments for the purchase of goods.
Consumers who want to pay amounts which are higher than 10. 000 Euro in cash, have to show their ID card. And the trader has to document the surname, first name, place of birth, date of birth, the home address and the nationality.