I know little about the subject, but one thing I do know is that the informal forms of address can be used to express contempt. So maybe friends who've had a falling out would prefer to use them with each other for that reason?

Ørsted and Vestas, which are behind the projects that Trump is cancelling. And its timing, coming immediately after Trump's appointment of Jeff Landry as his leader for the occupation and absorption of Greenland, is also understood. Trump is at war with Denmark, and these are early blows.

Every descendant of slaves has more American heritage than Trump. But I don’t imagine that figures large in the minds of most people using the phrase.