I support quite a few Mac users and never recommend it myself. Also own a couple Mac’s and don’t use it.

I do occasionally use an app to clean somebody’s Mac of an irritating browser search hijack. I’ve never seen anything else.

Why should I change my mind?

How does antivirus software protect users who paste malicious commands they find online into the terminal?

No, that narrative died around 2010. The existence of malware targeting Macs has driven many macOS security improvements since, many of which are taken personally by HN readers.

As of today you don't need to install one on Windows also. Both OS have inbuilt s/w for this purpose.

XProtect (Apple's built-in antimalware) is usually all you need, as long as you're at least somewhat savvy (and sometimes even if you aren't). I believe installing any additional antimalware on a Mac is a waste of resources.

No, we're using the built-in mac anti-malware app

What anti-malware would have stopped this, exactly?

It is necessary. That’s why Apple ships a free invisible one bundled into the OS that you never have to think about, see, or update.