It's decent enough in the past 8-10 years that I don't bother with much free antivirus on my own or others' machines in the current year. It's a far cry from the Windows XP / 7 era where it was fucking useless and people got Ransomware or Rogues pretending to be AV's every other Tuesday just from using google images. Nowadays it is simply adequate for most people.

At this point the only other antivirus I bother keeping an install of on my personal system is Malwarebytes free in case things really go tits up and I need to run it and rkill from safe mode.