This. Adding up, front-end engineering has an identity crisis now. A friend of mine is a web dev who started back in the days when Javascript was for form validation.

When JS frameworks and SPAs took over the web, he adapted himself. But being a UI engineer he cares about the craft's visual aspects, than the technicalities of JS.

Although he has a proven record of his works, he is now dealing with interview questions like "what are the problems with closures" and "when you do use function.apply()" and "immutability".