You're forgetting the UX designer, the UI designer, the UX researcher, the UI translator, the database administrator, the system administrator…

We have always been able to break complex tasks down into multiple, simpler job descriptions. That doesn't mean each person is limited to doing at most one of them.

I've seen candidates describe themselves as "Front of the Front-End" in the context of job interviews where the web UI stack included a BFF (Backend-for-Frontend, eg Next.js or Remix). It actually makes sense. The corresponding "Back of the FE" skillset encompasses proxy servers, API gateways, routing, observability, browser networking, server APIs, deployment infr, etc., on top of pure UI per se. There's a breadth of knowledge required that puts many backend-oriented "full-stack" devs to shame.