Also, in terms of definitions, free software (even if you equal that with copyleft) doesn't really require that changes "must be submitted to the original maker

Also, in terms of definitions, free software (even if you equal that with copyleft) doesn't really require that changes "must be submitted to the original maker for redistribution" (quote from TFA). Copyleft, at least in the sense it's generally used, only requires that if you redistribute the code, the redistribution (including modifications) must also be free and copyleft. This might be nitpicking, but the wording could give a wrong impression of what free software is or isn't, and in a post that's essentially about the cultural and social foundations and relative merits of different models, that's IMO quite important.