I am generally somewhat skeptical about your comment. Sure, I hadn’t heard about Sabine’s video about the quantum eraser, but I don’t necessarily think that it disproves the idea that physics is never vague or unknown.
Perhaps it is different in physics than my own field, but if you read enough primary papers, enough lit reviews, at least in my field, you’ll see some common themes come up. Things such as “further research is required to determine this mechanism,” “the factors that are involved are unknown,” “it is unclear why this occurs.” Actually, your suggestion that nothing is vague is entirely counter to my entire field of science. When we introduce ourselves in our field, we start off with a sentence about what we do not know. And perhaps it is my bias, having worked in my field, but I cannot see how any scientist could possibly say that nothing is vague.
To me, my interpretation is that “science is not vague” is itself a symptom of popular science. “Science is mystical” is simply a symptom of a slightly different disease - the disease of poor popular science communication. But I think that’s distinctly different from the question, which is asking if anything was vague. I’d love to hear your thoughts on the matter.