It couldn't be more obvious - guy was running around with 45:4 or something and the gameplay is more than enough proof.
He only played 0,3 Hours & Insurgency is the only game he owns - clearly smurf account for hacking.

He had to set his steam profile to privat and change his name to 'Shroud' - Screenshot also proof. ( https://ibb.co/qnxnnSb ) and link to his profile: https://steamcommunity.com/id/Vincent27200031422/

Here is the video https://youtu.be/AptK4HhVkUc
Sorry for the bad quality rn - YouTube is still 'processing' the video.

Maybe some of you guys can also report him...?