Given that this is a Linux forum and the article is written about Linux containers, why would you expect to read about Sandboxie?
I wish wildersecurity would institute a policy such that any topic-starting post which amounts to a bare backlink (poster fails to provide any additional commentary) is summarily deleted. Minimalist, WHY did you initiate this topic? What is your interest regarding the "containers" knowledge domain? You you agree/disagree with the linked article's premise/analysis/conclusion, and why so? Fool me twice? I clicked; again, a huge waste of time. The article is a rambling puff piece ~~ truisms, plus RH good, Docker good but not as good as RH. In RH you can trust, rah rah. I can't fathom why you chose to link to such drivel.
I posted this topic because I thought it would be interesting to some of forum visitors or members. Personally I don't have much knowledge about containers (or Linux for that matter), only some basic info. Do I agree with it: It seems logical argument to me. Clearly I can't comment about Docker, Red Hat or any other specific infrastructure. If that was a policy, a lot of threads here would be deleted. I guess that mods can always delete a thread if it's not suitable for this forums.
I disagree, I don't believe the topic-starter should always comment on the article. Perhaps he/she simply hasn't got any opinion about it, and just tries to inform other people?