I know that particular site mentioned above @BleepingComputer does not recommend Avast At all, I posted a topic there a long ways back on a PC issue I was having, one of the first replies after I mentioned which Antivirus I was using on the system, was to Drop Avast Free and just use Defender. In fact one of the moderators there has a whole topic on why he doesn't recommend Avast, (should be easy to find in one of the topics there)
I've decided a ways back to keep my systems on Avast Free, as I trust it more, it works well for my needs, sure I tried Defender briefly in the past, but in the end choose Avast Free for the household systems here