https://www.gnu.org/philosophy/free-sw.html

Linked to from here:

https://www.fsf.org/about/what-is-free-software

Very explicit about open source being different from free software.

Also if what you say is true, there would be no reason for “open source” to exist. It was coined by Christine Peterson explicitly because the term free software conveyed a different ideal than the BSD/MIT license crowd was aiming for.

> nearly all open source programs are in fact free.

You are just wrong, and your first link proves it. The definitions are essentially identical. The philosophies behind them are different.

It's like the "Gulf of America" vs. the "Gulf of Mexico". You are talking about the same territory in either case, just expressing a different viewpoint about it.