Louis Rossmann, who has been outspoken about Apple's repair hostility and is a right-to-repair advocate, has released a video where he goes over his take on this site: https://www.youtube.com/watch?v=agG108sxkyo

It's a pretty good take, and points out some key criticisms: lack of parts for common repairs, lack of support for older devices, and, of course, no schematics.