Earlier quoted context omitted.
> Unfortunately, the fundamentalist FOSS mentality we encountered on Reddit is still alive and well. This is incredibly rude. You may not like it, but GNU/Linux was built by people for user freedom, not for proprietary email clients. Instead of using words like “fundamentalist” please instead consider that you are doing something that is not welcomed by the creators of the operating system and a large number of the l…
If you consider "fundamentalist" a rude adjective to descibe the said behaviour, what would be a better adjective then? I don't have anything against that kind of attitude, it's great and I approve those guys though I myself also like to buy software. "Fundamentalism" IMO describes it pretty well and I don't see the negative connotation.
I can understand thinking it's a "fundamentalist" mindset if you're used to Windows or Mac and software being proprietary by default but if you're a un*x poweruser who doesn't hesitate to hack the source code of the software to customize it it's a very pragmatical approach I think.