Unity Editor 2021.1.15f crashing on Player Settings

Oh my, they crash more than any other packages! It is a CONSTANT source of brand-new users showing up here posting questions like “how can I fix errors in Collab and TestRunner?”

No new user needs ANY of those packages, and when they do it is trivial to find them, and yet they get crapped into every new project without any question whatsoever, causing endless issues.

Extra unwanted packages in new projects (collab, testing, rider and other junk):

https://discussions.unity.com/t/846703/2