No, that’s not quite it Quaro, virtue signalling (in the sense that I’m using it here) works precisely because you do believe that (e.g.) equality is a good thing, and (e.g.) harassment is a bad thing, and social signalling in that context is quite normal; i.e. it’s not that there’s something wrong with virtue signalling per se.
What you don’t notice (I submit) is that when you assent or dissent to these words, the extension of the term that you’re assenting to is different from the extension you think you’re assenting to. For example, racism is a horrible, specifiable, falsifiable thing that one naturally virtue-signals that one is against. In this sense, it’s possible for someone to demonstrably be a racist or not. This is the Motte sense of the term - easily defensible, most people agree with it.
However, the sense of “racism” in Theory is vastly different, and gets its meaning from within the Theory, not from ordinary discourse. In terms of Theory, one is necessarily and automatically racist by virtue of one’s group membership, which is defined by the theory according to one’s group’s closeness to or distance from some abstract “power”; in this sense racism is something one is necessarily guilty of because of something out of one’s control, and it’s not a falsifiable concept. So you can get someone of colour claiming, “I can’t possibly be racist because I’m not white and not “privileged””. This is the Bailey sense of the term - difficult to defend, not many people would agree with it when they see it laid out explicitly.
But by virtue-signalling for the term in the Motte sense, you are unwittingly giving “air time” to the Bailey sense, i.e. you are unwittingly a carrier and repeater of Theory, of ideology. This is how the mind-virus hikes on the social signalling mechanism to spread an intrinsically divisive Bailey message that goes totally against the kind of liberalism that the Motte sense is based on (i.e. “innocent until proven guilty”, falsifiability, people’s actions are largely the result of their individual choices, etc.,etc.).
Another way of looking at it: the Theory has disguised itself as liberal, and gotten you to buy into that by using terms that you use in a Motte/liberal sense, but that the Theory (while it’s gambolling about on its own turf, so to speak) uses in a Bailey sense.
IOW, you indirectly virtue-signal your assent to the Bailey/Theory sense because you think the term is being used in the Motte/liberal sense.
The non-falsifiability of the Bailey/Theory uses of terms is what leads to the kafkaesque turn of ideologies, to purges, de-platforming, silencing of critics and calling critics “harassers”, etc.,etc. - and eventually, further down the line, to megadeaths.