I think the vast majority of websites and apps are not "technically complex". The backend is generally close to a CRUD with a small amount of "special sauce". T

I think the vast majority of websites and apps are not "technically complex". The backend is generally close to a CRUD with a small amount of "special sauce". This makes UX the defining feature for most projects. This means that for the "average" company you will need more frontend than backend developers. React is by far the most popular frontend framework right now and provides a valuable lingua franca which provides a large talent pool.