I can’t really think of a reason for that as Reddit is hated somewhat equally by “both” sides of the spectrum. It’s just something I find interesting.
Prove it, because I only see US-centric posts while browsing /all.
And no, America is not the US.
Your ALL is amplifying the highest engagement posts from the largest instances, particularly lemmy.world, which is definitely US-centric due to it being the largest open registration instance during the exodus… Go ahead and switch to your instances LOCAL and see what original content is being posted on sopuli.xyz. Quite a difference. https://sopuli.xyz/?dataType=Post&listingType=Local&page=1&sort=Active
The thing is that I don’t have those issues on Lemmy, because I usually browse by /local, both on this server and on beehaw. But I had to block lemmy.world with my user on Kbin due to that problem you were pointing out. And miraculously, I can see content from Kbin, lemmy.ml, blahaj, beehaw sopuli, and so on, because there is no way to browse only local content on Kbin as it can be done on Lemmy.