There is a clear definition of what "Expert" means in SoJS survey. It's always under the question. In case of CSS it's "Able to style an entire front-end from s

There is a clear definition of what "Expert" means in SoJS survey. It's always under the question. In case of CSS it's "Able to style an entire front-end from scratch following a consistent methodology" and in case of JS it's "Handling advanced front-end patterns (state management, data loading, etc.)". It has nothing to do with people labelling themselves.