No definition of stupidity is given, no criteria for identifying stupid behaviour, no evidence for any of these ramblings. I checked out a few other article. More flat statements with little or no reasoned or evidentiary support, and what references are given if you actually read them, in the cases I found are being mis-interpreted. They often don't actually support the position taken.
The whole thing is stupid.
Having said that, I think we do sometimes overestimate how clever we are, as a species. If you think about it, we literally just right now, in evolutionary terms, put together a technological society. The last 10k years of advances since agriculture and cities are 3% of the last 300k years since our last common ancestor.
That means we only just barely have enough intelligence to develop a civilization, the bare minimum required. Otherwise we'd have done it sooner. We're jumped up plains apes.
Still, this article contains no such discussion, no analysis, no examination of evidence or reasons why any of what is asserted might be true or if it is true. It doesn't even properly explain what it's talking about. Nothing you could even hang a discussion on. Pure rubbish.