This is a lot of speculation. You could just as easily speculate there was a need for ape-kind to co-operate with one another for mutual-aid. Without more detailed hypotheses, experimental protocols, data collection, and analysis these speculations amount to nothing more than interesting stories. Neither biological nor cultural evolution is a random process though both may have some random elements. Once again, rigorously designed experiments can provide better probable explanations than evolution being a random process.
In general the article is a fluff piece with few specifics or citations provided to give any sort of credence to anything discussed.
At best it warns of typical concerns for any sort of scientific research which requires a careful examination of which variables are relevant, being able to establish and differentiate between causation and mere correlations, frequently establishing confidence levels based upon statistical analysis as well as controlling for bias in the researchers and test subjects. Double blind medication trials to determine the efficacy of a treatment versus non-treatment where neither the researchers nor subjects know who received treatment versus those who didn’t in the control group until after the data is collected and analyzed is a common research design used to control for subjective bias. Any first year science student who has studied the scientific method should understand these basic principles.
Someone who has not been introduced to the scientific method may believe the article provides some definitive conclusions while scientists would see this as nothing more than a reminder to conduct science rigorously if you hope to have any significant confidence in your findings and conclusions without offering any specifics on either.