[josephernest]

Open source is not trademarked by FSF or OSI. I think it is ok to call it open source since the source is open.

[satvikpendem]

Let's not redefine words based on what you personally think is correct when people en masse have been using them to mean a certain specific concept. It does not have to be trademarked, it can have a de facto meaning that everyone generally understands to be what it means.