Hmmm. Article not out to a convincing start here. I recall Jesus saying something about doing good works so others can see them--which pretty much seems like what "virtue signaling" is--and he did not seem to be for it. Rather He mentioned not letting one's right hand know what one's left hand is doing when doing good works.
You are absolutely right. Jesus criticized those who made a spectacle of themselves praying in public and flaunting their fasting and almsgiving. As He said, “they have their reward.”