I find this view limited. If we look at the most successful tech CEOs, they all personally drove the direction of products. Steve Jobs is an obvious example. Elon pushes the products of his companies so much that he even became a fellow of the National Academy of Engineering. Jeff Bezos was widely credited as the uber product manager in Amazon. Andrew Grove pushed Intel to sell their memory business and go all in on CPUs. Walton Jr. was famous for pushing IBM to go all in on electronic computers and later the mainframes. The list can go on and on. In contrary, we can see how mere cheerleading can lead to the demise of companies. Jeff Immelt as described in the book Lights Out can be such an example.