Installed applications can tell IT what software is installed on individual computers. IT usually doesn't care unless something could harm the computer or network... or until some higher up with nothing better to do tells them to do a search for someone like this.
I'm in IT and even I use a mouse jiggle app just so Teams doesn't show I'm away constantly. Even when I am working on another program, Teams can show the away status which annoys me.
Not everybody who uses it does it to goof off. Micro-managing is so stupid. There are other ways of knowing your employee is doing work.