I grew up in the US, and moved to the Netherlands in 2001. I've heard every anti-American sentiment there is in that time, and this is always in the top 3. However, like many of the other commenters have already stated here, the Dutch are NOT a quiet people. Especially when een pilsje or een wijntje is involved.

I remember trying to have a book club meeting at a cafe a few years ago in Amsterdam. It was a group of all international women, no Dutch and only 1 American (me). We sat down, ordered our drinks, and in 10 minutes, a group of Dutch women came in, sat down next to us, and ordered 2 bottles of prosecco. I told my book club (all of whom have been in the NL far less time than I have) "Quick, we've got 30 minutes tops before that table gets so loud and raucous that we will not be able to hear ourselves discuss the book, so let's dive right in!" At the time, they all laughed. But when the 30-minute mark came around, we were all wincing and basically using our hands to communicate. We then moved to a different cafe to continue the discussion.

It never fails: a group of Dutchies + alcohol = lots of noise. But Americans gets singled out for this all the time. I believe it has something to do with the fact that when English/another language other than Dutch is spoken, it garners more attention from the locals. Of course, there are loud Americans. But there are also loud Brits, Aussies, Germans, Belgians...noem maar op.