I don't think that's an accurate summary of the authors findings. He says she likely founded a mosque, and there is zero evidence from midevial sources and earlier, that she did anything more than that (it's worth pointing out that her very existence is disputed by some historians because there are no references to her until centuries after her death). It's impossible to prove a negative, but there is no evidence the mosque operated as either a library or a university at the time of its founding. So again, I can't debunk this- nobody can - I just think it's pretty flimsy. I could claim the world's first university was an Egyptian temple, because they probably taught things there.
I dont think it's fair to say people are being overly pedantic because she was a Muslim women when the only reason this is getting shared in the first place is because she was Muslim woman.