>I could see readers going away thinking it's a possible post-coal career for some, but that's a far cry from "a clear implication was that it's no big deal for anyone to learn to code as a very late second career."

Then I'm glad to hear you're unusually hype resistant.

>Would you walk away from this article thinking that participating in triathlons is a viable hobby for senior citizens?

No, that's clearly framed as an out-of-the-ordinary feat for an individual (nickname indicating uniqueness, "and still finishes"), and about a hobby rather than a new core income source.