This:

> "Any proposal that requires everyone to just is not a solution, because everyone will not just"

invalidates this:

> A real solution is to have the team agree on a shared style guide, then enforce it with a linter and formatter.

... since the "team" is everyone. It's basically the same problem.

The other issue is that linters/formatters don't "solve" all formatting/stylistic choices. Most formatters, fortunately, still allow you to choose where you do line breaks for example, since they do matter and shouldn't be arbitrary.