That's like saying, "If we didn't invent the internet, we would have never had privacy issues". OK, so if we didn't rely on containers - would hadoop have had a perfect set of packages for every distribution? Let's say that the packages for Arch linux were broken. What next?

That's the whole problem with the article. It takes a problem (building Hadoop was bad), correlates it to a completely different tool (because we have docker, hadoop build scripts are bad), and goes on to rant about everything else.