The author of the article declares his incompetence at building and maintaining software projects for which he's not the target user, and thus concludes the same applies to the creator of Redis and Disque. Based on that he instills a lot of FUD around a project that has proven very useful for me so far.

Also, from the article:

The other reason I don't foresee using Disque is alluded to in the author's own comments. He observes that many people are using Redis as a message broker, and decides that maybe there is a need for a "Redis of messaging". I would say the opposite is true, and that instead of another message server, people want to use Redis!

I disagree. I've been using Redis for queues for a very long time, and I'm in the process of migrating all those queues to Disque.