Why do you see feedback as "purity test"ing?

Newspaper reporters are professionals and they still have editors. We've all seen the disaster that results when an author gets too famous to edit. And we don't have to go in and work with their prose later.

Code reviews are where "my" code becomes "our" code: I want my coworkers to feel comfortable with and fully understand and be happy to support the changes I am proposing to our software.