I didnt respond to the comment because I mostly agree with it. The Original comment was initially an off hand comment at like 10pm - So, poorly executed. The train of though was more that our loyalty to nations is arbitrary. It's random, it's pointless. I see no value in being proud of your culture, ethnicity, language etc, since we are all, in the end, people.
I'm not against the idea of the nation state, mostly because doing so would be impractical and pointless. I don't want migrants flooding accross the border, but of all my concerns reguarding migration, dilution of culture isn't really one of them.