The Queen is Argentinian. She is from wealthy landed family. What an Argentinian friend of mine would call the oligarchs.
Her marriage into Netherlands royal family caused controversy due to her families involvement in a right wing military junta during the Argentinian "dirty war" when leftists and Peronists were murdered.
Queen Máxima of the Netherlands - Wikipedia
So her family were supporters of right wing military government as wealthy old landed gentry ( gentry equal oligarchs in South America) to protect there social position.
Hardly surprise when she came to Europe she fell in with European aristocracy.