This is reflective of the different roles for founders vs. software engineers, though. A technical founder's job is to show that a new software-based way of doing things is worth doing. A software engineer's job is to do it well.

A necessary precondition for showing that something new & innovative is worth doing is usually to do it. It's not a sufficient condition though: you also need the risk tolerance to work on things new & innovative that may not work; you need the deep understanding of your problem to understand what the solution looks like; you need the location & social connections to access capital and hire real software engineers to scale your solution; and you need the judgment to hire the right people to fill in your skillset gaps. That's why most software engineers aren't off founding billion dollar companies.

Note that this applies to other founder-led enterprises. Fred Koch was a hell of a chemist before Koch Industries became a huge conglomerate. Warren Buffett studied under one of the greatest value investors (Benjamin Graham) on Wall Street. Carnegie started as a telegrapher and railroad superintendent before becoming a steel magnate. You need that operational experience and domain knowledge before founding a world-changing company.