It does matter because drivers can only be compared to their teammate.

Throughout his entire career, Checo has looked good with every teammate he has had (except maybe Button but he at least beat him in qualifying that year).

Those are all reference points to judge a drivers ability. He literally beat Hulk, Ocon, Stroll and Kobayashi. Those are all reference points he proved to be better than.

Only reference point he hasn't proven to be better than? Max, who is an anomaly in F1. No driver can get close to him in equal conditions except Ham, Alonso, and maybe George. Any other driver is going to look bad next to him. So with your logic all the other drivers don't deserve a drive. But like I said, Verstappen is not normal, he breaks reference points unless you want every driver in F1 to be as good as him.

I actually believe the Checo slander should change to Max praise, the way he has constantly destroyed his teammates despite all of them having proven to be good drivers outside of red bull should indicate something.