I think it’s always good to see such things enacted, and it’s rarely done on such a broad scale. Common names are a big bucket of chaos for joe schmoe anyway^*, so I’m all in favor of adopting anything more descriptive or in relation to field marks. I feel that the changes being broadcast so publicly will lead curious people to learn more about the history of birding, too- and hopefully lead to understanding why this sort of thing matters.

* Often broad species names, even. I’ve found that the general public has no idea of the difference between a mouse, mole, vole or shrew, and has even less of an idea that there are multiple species of all of them.