The advice "you don't need scalable architecture" comes from the same place as "performance isn't important, code is all about readability and maintainability"

The advice "you don't need scalable architecture" comes from the same place as "performance isn't important, code is all about readability and maintainability" It's just insecurity and pure coping. They're not dealing with complex performance bottlenecks, so they say these efforts are wasted.