I don't think it's fair to compare people who are already seemingly at the peak of their career, a place to which they got by building skill in coding. And in fact what they have now that's valuable isn't mostly skill but capital. They've built famous software that's widely used.

Also they didn't adopt the your-career-is-ruined-if-you-don't-get-on-board tone that is sickeningly pervasive on LinkedIn. If you believe that advice and give up on being someone who understands code, you sure aren't gonna write Redis or Django.