No M is for meta. These names predate X let alone XFree86 by many years. The names don’t even come from a Unix system. Even GNU emacs predates XFree86 by 6 years.
Your writing implies that Emacs is something like the notepad of Ubuntu. But it’s history is much more extensive than that—- which happens to be one of its unique selling points.
Anyway the point regardless of historical context, is that for all sensible people, that capital C is being used as an abbreviation for the word Control. You’re just being a prat correcting people. You’re not even technically correct, you’re just wrong.
