"Virtue signaling" and "white knighting" are infuriating formulas because they can be used to dismiss anybody doing a morally good thing without any argument. Reducing your carbon footprint? Trying to be nice to other people? Taking a moral stance on anything? Somebody tells you that the way you act is pretty bad? Nice try, you virtue-signaler! It's utilitarianism pushed to the limit, only actions matter, ethic and morals are for poseurs.

If you think people are being hypocritical then try to come up with a factual argument about why it may be, assuming by default that any moral stance is necessarily empty posturing is intellectually bankrupt and frankly quite terrifying.

Agreed, it is a terrible thoughtless cliche. It purports to see into the mind and heart of the person doing it and smearing the act as disingenuous and therefore void of moral value. Obviously, we all KNOW deep down that they're doing it for bullshit reasons, it's obvious, we can all tell, can't we?

Made worse by the fact that some famous and powerful people are phonies who in fact do things for bullshit reasons, which you can be convinced of by their past behavior. On top of that, doing stuff on the internet for attention is pretty common. People then make the leap to "doing X thing I don't like is virtue signaling". It's not that I think it never happens, people aren't always sincere and I didn't just fall off the turnip truck, but the accusation itself is just a baseless smear if it's not accompanied by something corroborating.

We should be skeptical, not oafishly dismissive.

Except it's more like "vice signalling."