I will never forget whoever decided it would be a good idea to conflate "FOSS" and "open-source" to mean the same fucking thing, and to have to refer to software that has open source code "source available". I see this exact fucking discussion going on at the very minimum once a week...

Edit: I know it's a common misconception. My point is that it's a misconception because of the term choice. There's a reason we have to explain it over and over and over again.