Boy,it sounds like this guy is a real clown.However,the concept of "statelessness" *does* exist although my belief is that relatively few people in the world qualify for this classification.
Simply put,to be "stateless" is to be a person who *no* country on earth will acknowledge,under its particular citizenship laws,as being one of its citizens.
I always tell them that “a man without a country” by his own choice is a man who should never be trusted.
We were serving in the Vladivostok area for two years and met Peace Corp types and UNO volunteers. I don’t think I ever met such weirdos in all my life. I don’t know if all Peace Corps people are the same, but the ones we met in eastern Russia sure were, and seemed to loyal to no country; certainly not to the USA (in their conversation).