So he used a database 7 years ago that was about one year old at the time and had a bad experience with it and now continues to judge it to this day without tracking the evolution since, including schemas in the current release candidate.
No, the article isn't about Mongo. Quite the opposite.
Well, this discussion here is now about Mongo
Regrettably :(
Uhmm, the article actually contained the phrases "Don't use Mongo" and "pick PostgreSQL" so it's kinda asking for a duel between the two in the comments.