In this case, it doesn't sound like they're reverting it because of overall breakage, but rather because it breaks the tool that would otherwise be used to control TLS 1.3 trials and other configuration. Firefox had a similar issue, where they temporarily used more conservative settings for their updater than for the browser itself, to ensure that people could always obtain updates that might improve the situation.
In corporate environments, the last thing that changes is the thing that gets blamed. BlueCoat was not upgraded, Chrome was, and now things are broken? Not their fault.