You need to check harder.
English rivalry with The Netherlands especially during the period of the Anglo-Dutch Wars gave rise to several phrases including Dutch that promote certain negative stereotypes. Examples include Dutch courage, Dutch uncle and Dutch wife. The particular stereotype associated with this usage is the idea of Dutch people as ungenerous and selfish.
I could give many, many other examples. Care to hear what the British think of the French, Spainish, or Germans?
Yet, today, America's leaders are reenacting every folly that brought these great powers [Russia, Germany, and Japan] to ruin -- from arrogance and hubris, to assertions of global hegemony, to imperial overstretch, to trumpeting new 'crusades,' to handing out war guarantees to regions and countries where Americans have never fought before. We are piling up the kind of commitments that produced the greatest disasters of the twentieth century.
— Pat Buchanan – A Republic, Not an Empire