I'm from the Netherlands myself and even speak a little German. I've upvoted some German posts in the past as well.
Although some people might not 'need' the small amount of extra hive they receive from a topcomment upvote, it does still is a form of appreciation and maybe an encouragement for the commenter and others to keep engaging.
So we shouldn't be focussing on some specific countries I think.

We do have a trail you can follow (this can be set in PeakD).

And if you are still interested in joining, just contact me.
It isn't a day job 😉

Thanks for sharing!