I'm not sure he does.
The Western Conference is stacked all around!
If you are just choosing centers then you have to put Anthony Davis, Nikola Jokic and Karl Anthony Towns ahead. Clint Capela would be right there with Gobert.
If you want to get into forwards you have guys like Kevin Durant, Lebron James, Paul George (having a great season), Draymond Green (not having a great year, I'm fine leaving him off although he has probably been better defensively than Gobert), Doncic (who it looks like will have a great chance to start), Tobias Harris, Demar Derozan and Lamarcus Aldridge.
Again, I am not sure Gobert belongs on the All-Star team.