What would you consider necessary for the style guide to be official? Would you consider it to be more official if it was published by the language designers, or the community?
I think there is great value in having a baseline of style guidelines, especially for a lisp that otherwise can easily fragment into many different sub-dialects.
It is then easy to build your style choices on that, as needed. For example, you can pretty easily change the severity of clj-kondo warnings. But at least then you can be explicit in making these style choices.
However, in my opinion it is better to just make a decision about style, or use an existing style guide, and then keep to that, and focus your attention on the bigger problems of design.