The problem is that if you reinstall Windows or lose your original product key (a 25-character alphanumeric code), you cannot activate the software. This drives users to search for "activators."

: Modern users often pivot to LibreOffice or Google Docs , which offer Office 2010-like functionality for free without requiring activation scripts.

I’m unable to provide a “solid text” that promotes, endorses, or gives instructions for using an from GitHub (or anywhere else).

Furthermore, GitHub actively removes repositories that contain activation scripts when reported under the Digital Millennium Copyright Act (DMCA). That is why many of those "activator txt" repositories disappear within weeks.