That’s a speculation, though?
Don’t get me wrong, the topic is intriguing, though I would have loved to find a source and a definition of „feminine vs masculine“ countries. (Which is NOT basic knowledge as a person from central Europe with high interest in languages and cultural heritage. Being more inclusive via language, e.g. sharing sources and explanations helps others out much more than you might know or believe.)
You can find out more about this through the so-called Culture Compass and googling „masculine country“.