Can’t speak for the Netherlands, but here in Belgium the first thing anyone thinks of when you speak German is the war. I know I’m not supposed to mention it…
That being said, German usually sounds like angry Dutch to us, so I guess we both agree on where we are on the funny-angry spectrum.
Also, most of your examples are more common in the Netherlands, which are definitely further along the funny axis.
It’s a small part on the German border which we got as compensation for WWI. It has a population of roughly 80.000 people, less than 1% of the Belgian population. The two main languages are Dutch (60ish %) and French (40ish %), but German is technically a national language.
I suspect that people in Flanders encounter way more Germans than German-speaking Belgians.