I always thought journalists were hopeless at reporting precise details, but when you compress your notes using such a lossy technique as this, it's not surprising that the facts can get skewed.
Fwiw, I've never met a journalist who knew short land although I'm sure such exist. (I've written plenty of articles myself and don't take shorthand.) I sometimes record interviews, which is good practice for an in-depth interview. For lots of purposes though, you're looking for one of two money quotes and other material that you paraphrase or use as background.
In my experience, when I'm quoted, issues I have aren't so much that "I didn't say that" but that I said something longer and more nuanced which wasn't captured in the quote in question. It's one of the reasons you learn when giving short interviews to hit your key points precisely in a way that doesn't depend on a lot of context.