Nah. What's weird is you thinking everyone should follow your strict rules about national segregation online.
If it's such a problem for you, instead of begging everyone else to fit your narrow world view, go find an instance that works better for you. Or, when you don't because that's ridiculous, make your own and block it off from everyone else not following your rules. Then you might be happy.
If you're uncomfortable with the content you're seeing, you should be more active in moderating that. Block users, block communities, stick to your subscription feed, etc. People in these spaces so often seem to resign themselves to having to deal with content they don't like when they can absolutely change it on their own.
Take more autonomy in curating your experience here and you'll have a much better time.