Another problem is that now your business logic is obfuscated inside the ORM layer. If you look at the structure of the source code of a typical Rails application, all you see are these nice MVC buckets. They may reveal the domain models of the application, but you can’t see the Use Cases of the system, what it’s actually meant to do.

Why should this conversation be separate from other conversations about the work to be done? Design is one consideration alongside frontend and backend considerations, which often all intersect and require the same participants. Shifting this discussion to a separate work item can result in disjointed conversations and difficulty finding where a decision was made.

there is one major weakness to this approach and to scoped CSS: organization gets very hard – you end up with styles everywhere!