I think your approach would work for a larger company than the article was about.

Edit:

> "generalist" route with modern frontend and backend is nearly impossible today

This is simply not true; it all depends on design and organizational priorities. An organization can choose to use the same language in the UI and server, and prioritize the compromises that come with same language development. (IE, C# + Blazor, or Typescript + NodeJS.)

11 engineers is a big enough company to split the team.

In some cases it may work, however building great UX in browser is not the same job as performance optimizations or security of a server application even on the same stack. Generalist can build a CRUD app, sure, flex layout and ORM are not rocket science. Going beyond that is like finding a unicorn. Such people do exist, but they are rarely found in an average company. C# or Java UIs are a different story, of course, but I’m not sure they should be called “frontend”.