It's open source. It does very little to force the world into more freedom. I feel I understand the libre folks' point of view, I'm just not in a position to do much about it.
Almost all open source licenses are Free Software, and vice-versa, MIT included. As long as it gives users the Four Freedoms, it's Free Software. What you're talking about is copyleft, which rms certainly prefers people use, but it's not mandatory to be Free Software.