I assumed it's because the Germans have robust, well oiled shitposting pipeline infrastructure, and it was trivial to switch it from Reddit to the Threadiverse.
The real question is where are the Dutch. The Netherlands is a small nation, but one that's made it clear they will not be outshitposted by anyone. I haven't heard any G E K O L O N I S E E R D whispers.
Funny you mention that, because the Dutch are who I've been seeing in my feed. Moreso than the Germans. For me, it's largely the Dutch and the Australians.