>In order to circumvent the terms of the GPL, NeXT had originally intended to ship the Objective-C frontend separately, allowing the user to link it with GCC to produce the compiler executable. After being initially accepted by Richard M. Stallman, this plan was rejected after Stallman consulted with GNU's lawyers and NeXT agreed to make Objective-C part of GCC.[7]
Given that both NeXT and Stallman changed their minds on this issue, I'm not sure that you can argue that Objective-C would not have eventually been open sourced. Especially given Clang.
I'm not sure why you perceive that I think that GPL is not Open Source. Quite the contrary. I'm basically arguing that "Free" software misses the point of open source software. Which is in counter to these very well known opinions:
http://www.gnu.org/philosophy/open-source-misses-the-point.h...
http://www.gnu.org/philosophy/free-software-for-freedom.en.h...
And primarily I object to Stallman's hijacking of the term "free" where the only thing I see is control.
One example which disprove you believes and whatever data you refer to is the Objective-C compiler. NeXT wouldn't have released it as Open Source if gcc wouldn't be GPL licensed. Source: https://en.m.wikipedia.org/wiki/Objective-C
Further it sounds like you want to argue that the GPL is not a Open Source license. This is also wrong by all reliable sources, e.g. the Open Source Initiative: https://opensource.org/licenses