The point of the article is not to take a swing at Windows 10. I like Windows 10 and think it is the best Windows ever. It is working great for me now on version 1511, and that is good enough.
But upgrading to the latest version of the OS has become a crapshoot, apparently, due to insufficient Microsoft QA testing. MS appears to be relying on their broad user base to report issues with each release version, which then get resolved in subsequent patches. So letting it bake for a few extra months is good advice. I'll take mine fully patched please
In my opinion, if your current OS is stable and compatible with your current hardware and software, there's no need to rush into the latest just to have the latest. If there is a feature upgrade you really want, or a fix to an old issue you need, then it's worth the risk.
Otherwise the OS's job is just to stay in the background and let you run your applications on the PC. If what you already have meets your needs, why take a chance?