Here is the full video of the game. I cut out all the scenes where it shows his cd key and other personal info and also during the time where nothing really happens.
Of corse the quality is not the best anymore but it should be good enough for it's purpose.
For me Troister is now 100% legit nothing really looks odd here and he is just playing normal with some sort of laggs.
As it seems the was recording the whole match with obs but was in fact recording his entire screen so he could not have hidden his cheats at least as far as I know. That's why you could see his cd key, Steam overlay, desktop, etc...
As far as I know you can only hide your cheats if you are only recording the game so that the overlay of the cheat (Steam, desktop doesn't show as well) doesn't show which he wasn't doing in this case.