It’s also well known that so called anti-virus software is doing crazy shit on your machine and is actually opening it up for many exploits.

If that is your stance, then there is literally zero privacy anymore. Zilch.

If I’m walking down the street and somebody marks that one person walked down the street, does that invade my privacy?

In that case, how does the concept of privacy even matter anymore? There is none, and there never will be.