Considering the Netherlands’ strategic ties with the US, this sounds like quite a bold move. France doing so was one thing, but the Dutchs have always been rather Atlanticists.
They've previously stated to be far more worried about the dependency on VISA and MasterCard than the gold reserves in the US.
https://nos.nl/artikel/2560460-dnb-maakt-zich-zorgen-over-am...
Yeah, that isn't really a thing anymore.