Your response has merit but it would be better if you assumed good faith. Even if you don't understand their thinking.
>I was convinced for a while there as I scrolled down that this was a joke. "Good parody!" I thought to myself. Then I realized to my horror this is actually serious.
...is pompous and holier than thou. Being unable to see the value in this infographic doesn't mean it's trash, and I think it's unnecessary to comment with such an arrogant attitude like that, especially when it's obvious they're just either not the intended audience or they're misinterpreting the goal of the graphic.
That's not a good faith interpretation.
Many of us share a general lighthearted humor about the state of the industry: Becoming a developer in some fields is less about engineering and more about "piecing things together."
Nobody's looking down on anyone. This is often something we joke about because we find ourselves piecing things together, too, almost to a point of silliness. It's not a rip at anyone sharing information, more like a jarring reality check.
But is it obvious? I'm sure others resonate with that.
You have to consider the possibility that his criticism is entirely valid and that a non-zero number of people find this roadmap way more convoluted than it ought to be.