[crystalbeasley]

"there are well-established principles to judge which code/software architecture is better" There are very similar principles for judging which design is better (affordance, natural mapping), it's just that coders don't know those principles.

You're implying a value judgement that code is an objective discipline and design in a subjective discipline. There are aspects of visual design that are subjective. However, UX is a testable, repeatable, objective discipline that is informed by the work of cognitive science.

Yes coders have arguments... with coders. They have inside baseball arguments. It's entirely different than a designer having an argument with a coder. Often, the designer has to teach the coder the principles of design in order to even engage in a logical, productive discussion.

The overriding point I was making is that the tools like github are designed for code, not design. Our tooling inherently advantages code. It's a pain in the ass to even insert an inline image into a comment. Github isn't built for evaluating mockups and wireframes. Designers do our best to bootstrap into the tool, yes. But it's not our tool.