As define by Avast: Most malware infections occur when you inadvertently perform an action that causes the malware to be downloaded. This action might be clicking a link in an email, or visiting a malicious website. In other cases, hackers spread malware through peer-to-peer file sharing services and free software download bundles.What are you talking about? The article correctly addresses what this is... generally and specifically. Generally speaking, it is malware so the headline reads correctly. Specifically, it's adware (a type of malware) and that's exactly what the article calls it. The word "virus" was never mentioned in the article.
Still, the article gives the feeling that it exaggerates the facts. The M1 Macs are not doomed by this in any way.
This just shows how relevant are Macs nowadays, even to hackers and cyber criminals.