Einstein, “the Swiss Physicist”

So he is labeled by an L.A. Times story today. That seems odd to me. Einstein did do most of his most famous work while in Switzerland, and, according to Wikipedia, maintained his Swiss citizenship until his death. But he spent fewer than 20 years of life in Switzerland, and my sense is that he didn’t view himself as a Swiss expat who just happened to be living abroad for over 40 years. Or am I misunderstanding how he viewed himself, or how he was viewed by others?