This meme is making these different disciplines answer questions they were never intended to answer. It's like complaining that a school principal isn't out there teaching students: that's not their role and it would be silly to expect them to do otherwise.
Philosophers would ask something like, "what is a cat?"
Metaphysicians would ask something like, "how can we know that the cat truly exists?"
Theologians would ask something like, "what does the Bible say about cats?"