Comment by pessimizer

This is nonsense, and I have no idea why you need to believe it.

Open Source can be used as Free Software because Open Source can be used as proprietary software or anything else, as long as you include the license or mention the author somewhere or whatever. But these are both standards for actual licenses, and the actual licenses are different. Copyleft software can not be included in your proprietary software.

Copyleft software is restrictive. You are required to allow people to access it, and required to redistribute it in source form if you are redistributing it in compiled form (or over the network for modern copyleft licenses.) You are also required to include all of the changes that you have made to the things that you have compiled within that source distribution, and to also distribute other code that is required to to make your software package work under the same licensing.

The confusion is only in people spreading misinformation trying to confuse the two things. You clearly seem to know that RMS can prefer copyleft over permissive licenses, but still need to pretend that there's no difference between the two. If you know that someone can prefer white chocolate to dark chocolate, there's obviously something wrong with you if you in the same breath say that there is no difference between white chocolate and dark chocolate. Why deceive people? What's the point?

If they're all exactly the same, everybody should be using the GPL in Linux then. Shouldn't even be a thought. Why waste time forcing corporate-friendly licenses if it doesn't matter and some people are against them? Shouldn't parsimony rule then?