So your problem is that because one half of an arbitrarily worded definition doesn't agree with your personal worldview (because moral relativism is not universally accepted as true, either among philosophers or scientists), you decide the thing which was being defined is wrong. And then you slightly change the wording of the definition in a way that doesn't actually change the practical use of the term, and say that is acceptable. Your argument seems like a fairly pointless exercise in semantics, to be honest.
What is universally accepted as true then? Tell me: I would like to hear something that everyone agrees on no matter the context or circumstances. Even facts that have been proven for millenia, such as the form of the Earth, are being debated to this day.
As for the 'slightly changing the wording ... in a way that doesn't actually change the practical use of the term', that suggests you believe that society is equivalent to morality, which is not always true since, if morality is absolute as you imply given your aforementioned criticism of moral relativism, then societies with conflicting morals will have one in the wrong and the other in the right.
Anyhow, my argument was that 'virtue signaling' is little more than to appease the greatest number of people that the signaler is interested in; in hindsight I should have quoted TPmanW's earlier post about how D&D conceded to then poltically correct criticisms and are now facing current ones. In other words, it is an insincere and empty gesture of good will that does not help anyone but the signaler; it may not be a bad thing as doing nothing isn't inherently negative, but it isn't a good thing either.