That’s what you get when you use one existing word for a somewhat complex set of principles. It makes it easier to talk about it, because you don’t have to learn new vocabulary or go through the list of requirements every time, but it also opens the door for misinterpretations. Imo it’s good that we have a simple term for it, but we also have to educate people to make sure it doesn’t lose its proper meaning.
It would be nice if the term “open source” could get some kind of legal protection. Like you can’t call your product “cheese” if it doesn’t have at least x% of actual cheese in it.