The same is true in this series. Drivers like Max Verstappen and Lando Norris (among the best drivers in the world) so very well, but they also spend a lot of their free time playing these games.
Other world class drivers (Hamilton, Vettel, etc), likely wouldn't do anywhere near as well.
Obviously there is some overlap in the skills required, but at the end of the day, experience gaming is going to help more than more experience in a real car.
The sims that the teams run (especially the top teams) are significantly more advanced than a CodeMasters game and fancy steering wheel...