Formatting by hand is probably only going to work for private hobby projects. In 99% of the other cases there needs to be a formatter that does the formatting.

That feels both largely irrelevant and false? False, because there are plenty of large projects that do have a house style but don’t use a formatter at code submission to enforce it—even if you reject the Linux kernel as an atypical example, basically every piece of commercial software from 20 years ago also fits, simoly because both formatters and presubmit checks weren’t nearly as common, and there were some chonkers there (like, I don’t know, Windows XP). Irrelevant, because it’s perfectly possible for a formatter to follow this convention (gofmt does, for example).