I'm don't see why a single person can't have a ton of impact merely as a coder.
I mean, this whole website is dedicated to (mostly) discussing tech startups and how (mostly) software disrupts and help scale outdated business models. Isn't the software-making business model also ripe for that disruption, at least in a smaller scale?
Couldn't a single coder (or a small team) help an organization get some competitive advantage when it comes to tools. Or even programming languages? Why does ALL the innovation has to come from outside in our industry?
Fred Brooks talks about "The Toolsmith" it the "Surgical Team" chapter in Mythical Man-Month, and how "the tool-builder will often construct specialized utilities, catalogued procedures, macro libraries".
Facebook made React, Apple made Swift, Google has dozens of those. And the teams doing those tools aren't that huge. Why don't we try new things instead of letting good coders go away or making them stop coding?