I'm in the US, and that sounds like most highways here. Sometimes, the road gets larger and a lane is added for now than just an exit or entrance lane, and sometimes the road gets smaller and a lane becomes the exit lane or otherwise has to merge left. When that happens, you're obviously not expected to remain in the lane that is leaving the highway. That's not "the rightmost lane" any more
I'm in the US, and that sounds like most highways here. Sometimes, the road gets larger and a lane is added for now than just an exit or entrance lane, and sometimes the road gets smaller and a lane becomes the exit lane or otherwise has to merge left. When that happens, you're obviously not expected to remain in the lane that is leaving the highway. That's not "the rightmost lane" any more
Whatever the specifics, I think this is rather about miscommunication online, not actually that either of you are bad drivers in any way.
Driving rules, road infrastructure and "cultural norms" vary somewhat betweeen NA and Europe, afaik.
You're right. I should have clarified originally. Thank you for stepping in.