I know. Do you? Source quality is whatever the creator offers. We agree on that. I don't get what you're trying to point out.
You, in this thread, mentioned yourself that the 4K videos are there because she offers them that way. So you know that if it comes directly from her page, it is source quality (whether it's original resolution or older videos upscaled by her).
In the post I quoted, the user explicitly states those videos were downloaded directly from her page. And you're saying that 1080p version isn't source quality? Go ahead and report it then, with proof that it's not a quality offered by her