It would be interesting to know how accurate that estimation is. It would also be interesting to know how many people deeply and unambiguously realize that such studies are speculative estimates (as opposed to facts), and why that is the case.

It is metaphysical-type questions like this that seem to get very little formal attention and funding. I would like to see humanity devote more effort to this type of initiative, and less towards optimizing advertising, making phones thinner, games more addicting, developing technology to send the ultra-wealthy into space, etc.