This advice sounds like nonsense. CS has neither knowledge of what layers of enterpriseware has wrapped their links, nor the domains that software uses, nor any control over those decisions by software engineering or marketing (or perhaps even more removed, some third-party electricity account management platform that they buy as a service).

You certainly could operate on policies like this, but I think most people prefer to spend their time differently instead of arguing with strangers who don't have any way to solve your problem.