It isn't, but I wanted to explain the behavior. I guess I made it a bit too general, but hopefully you now see what I was getting at.Yes, scanning Steam directories is sketchy, I agree. But scanning various directories on your PC is not necessarily a huge red flag...
After all, an anti-virus scanner also has access to your entire drive, and that is not a red flag. You should always be asking what exactly does it need access to in order to work, and what does its scanning behavior tell you about what it is actually doing.