Possibly because the Go &quot;authorities&quot; are now trying to attract the kind of programmers who need &quot;trigger warnings&quot; and &quot;safe spaces&quot;, for some reason. Just look at the new community CoC. I apologize if this constitutes a micro- or nano-aggression.<p>More seriously, it&#x27;s probably just a frequent mistake and they try to educate people proactively to help code quality in the long run.<p>Edit: the non-atomic map updates are mentioned in the FAQ, but you&#x27;re right, the documentation could be improved in that regard (possibly triggering many criticisms of the language from people who&#x27;ve never used it, just browsed the docs for reasons not to use it).