That is not what I posted. My original post, accessible via the GitHub comment version history is
"@addyosmani No problem; just remember that modifying someone else's code does not grant you any copyright to that code. I don't agree with your opinion that inserting existing code into a template (the API) for a framework (Modernizr) warrants a notice of credit, even with a few changes to the code being inserted."
If you run it through originality.ai, you'll see that bits of it are his writing, some is mixed and some is just ai. This blog post everyone is discussing is also written with ai.