I have never met a single person at any level of any organization or otherwise who has expressed this sentiment. This characterization is a strawman.
Usually the idea that shareholder wealth maximization is central comes with a whole bunch of other economic ideas. Like that long-term wealth is what matters, not wealth tomorrow. And that corporations aren’t the center of all life or meaning for everyone involved, just a way to generate stuff. And that in order to generate more wealth you need to constantly provide more goods for more people at lower cost.
These distorted strawman characterizations of capitalists are just outrage porn, they don’t help move the world forward at all.