The overall claim has some limited merits, but don't overstate the case.

You generating an idea in your seat about a site that, say, scrapes some public resource and presents in a useful way, are more valuable than the you who uses that same time to make yourself a sandwich.

And the ideas you can have -- ideas which you can only execute after having the ideas themselves -- are of a higher quality than someone who doesn't have your cultural and intellectual resources. Your ideas are more valuable because they are informed by a more nuanced knowledge of how things actually get done.

Or to put another way, if you were approached at a party about an opportunity to work on someone's seed of a project, would you rather that person be an engineer or a fast food employee? No offense to fast food workers, but the engineer has more, and more salient, skills when it comes to this question.

The idea can't be cashed in until it's executed, and an executed idea is superior to an unexecuted one, but in choosing which idea to act on there are clearly better and worse ones.