Exactly!

For what it's worth, the same issue exists in German speaking communities as well. /r/de is the subreddit for all German speakers. But while the Austrians and Swiss are explicitly invited too, by sheer number of citizens the news about German politics make up the vast majority of submissions in the subreddit.

The same probably applies to my account's instance (feddit.de), though I am not sure if the swiss and austrians have dedicated instances as well. Thanks to federation the effect is lessened, because every country (or otherwise defined group) can have their own frontpage. (E.g. lemmy.ca or lemmy.blahaj.zone)