> to explain to someone who's really fired up about racial justice or climate change that they're not representative of the public

To some extent yes. But also those issues have big implications for working people. It's possible to talk about them in a way that inspires and builds a movement, or in a way that makes people feel stupid and excluded from the conversation. Often they choose the latter.

> It's also not obvious to me that a bona fide labor movement would take a particularly strong stance on an executive order curtailing independent agencies

It should be absolutely obvious why the labor movement might be opposed to what is literally the largest layoff in American history.