Honestly the only application I have ever seen in the real world for AV scanning on a Linux system has been on email servers scanning messages for malware destined for Windows clients. I suppose there'd be equal use in running AV on network file storage, too.What would be a better free AV program for Linux?
Not that I think Linux needs AV program to begin with.
I think the most important thing a normal user can do is ensure their browser has an ad- or script-blocker running. I use uBlock Origin.