Who is "Humans"? This stuff is done by a handful of tech companies and megalomaniacal billionaires who are pretending they represent the entirety of the human race. It is not done by "us humans".
AI models don't train themselves. The vast majority of even just the US population is deeply skeptical of this stuff, even if they use it a lot. You can see in the whole data center debate how little people are willing to support even just inference. And now we're seriously claiming those people would want to have ever-accelerating model training and recursive self-improvement?