The most popular "complex" front end stack these days is something like Next.js and it's a single button push to have a dev server that instantly responds and u

The most popular "complex" front end stack these days is something like Next.js and it's a single button push to have a dev server that instantly responds and updates to saving a change in the code, and it's another single button to deploy. Just because you don't have familiarity with something doesn't make it complicated. It would be more or at least equally as complicated to write the majority of web applications using nothing but the browser provided abstractions directly.