sorry but what? CSGO aiming is the most simple thing you can grasp in any FPS title nowadays. It is literally as simple as shoot and drag your mouse down if you want to fully dumb it down to that point. If anything for a casual player it would be harder to master a realistic shooter as there are so many factors when it comes to aiming a "realistic weapon". Thus csgo being more appealing to casuals especially with the casual-friendly gamemodes that are released nowadays.
On topic though: I hope an underdog wins it much like Gambit won PGL Krakow last year, because fuck Astralis. Na'Vi is okay tho.