Bun specifically called out TigerStyle. Given that they were responding to this article, it's not a surprise they defended TigerBeetle.
All it takes is one internet search with the words "zig style guide" to find countless examples to pull from online. The Bun devs are entirely to blame for choosing not to create or follow one, and that decision, if I had to guess, stems from their refusal to do any actual software development themselves and instead rely on LLMs to do everything for them.
Maybe they could have asked robobun to open a PR to add a style guide?