Autoformatters and linter presubmit checks are used extensively at Google. Readability has nothing to do with those. It exists for everything else - ensuring that code is structured properly and idiomatically. Readability talks about structuring code, using the proper tools and containers where possible, and more. Everything from "that method should be named differently" to "you can use this function to do that thing you just wrote code for" to "this could be done with Immutable containers if you A, B, and C" and so much more.