Can you point out anywhere in this demo that you feel you see him whing? Using his scope zoom as he rounds corners in areas that there is a good chance there will be someone there doesn't = hacks.. he just knows the map well. If you will notice, there are plenty of times that he does this and is shooting at no one, just shooting in the chance that someone is there. I'm sure to you, that means he's just a noob at "covering" his wh.. I just don't see it man.
How long do you demo people before you come to the conclusion that they are hacking? Players that are whing and very good at hiding it sometimes could take a week or two of constantly watching to have enough on them to ban them.. it's near impossible to go into spec and catch a "good" wher in a matter of minutes.
There are people that play this map ONLY.. they know it inside and out.. they know their opponents and where there's a good chance they will be..