Virtue signalling is a term meant to cast aspersions on anyone who holds values other than the speaker. Is it virtue signalling to state you are a vegetarian?, that you eat only what you grow? that you eat animals you have trapped or hunted yourself?
Is it virtue signalling to state you use public transport? a bicycle wherever you can? a car that you built yourself? only cars which are built by your fellow countrymen?
In reality, it is a way of saying "everybody else is wrong and I am right.
Woke up.
Best
Les