I don’t think so. The US used to encourage people to make a choice, but if they didn’t, they didn’t. Even so it was only for people who were also citizens of another country and the facts you give don’t automatically state that.
The one almost relevant fact I do know is that the woman who served two terms as president (and thereby head of state) of Latvia was forced to give up her Canadian citizenship. It was Latvia that insisted, not Canada.
There used to be acts that a US citizen could do that would automatically cause revocation of citizenship–joining a foreign army, becoming an official in a foreign government, but they have lost so many cases from people fighting this that they have essentially stopped automatic revocation. But I think if you join an army fighting the US, they will pursue it. It used to be that just becoming a Canadian citizen–if you were over the age of 18–would also cause revocation, but that has long since ended.
What surprises you? Mother Theresa conned millions of people to donate to her organizations thinking she was using the money to provide palliative care to terminally ill poor people when she, using her fucked up idea of suffering is expiative, let them die painful deaths without benefit of true medical care.