Isn’t the advantage that EditorConfig allows you to choose a style over the style enforced by the language? For new languages and markup files this isn’t a problem because they may have developed a style guide in conjunction with the language but older languages don’t have that benefit.
Possibly, but I don't work with any teams that use any languages that don't have their own formatters, so I don't even know which languages are still missing one.
The languages they're using are C#, TypeScript, JavaScript, Go, Python, and Ruby.
All mainstream languages have good formatters these days that go much deeper and understand the language.