This isn't quite what it says. That paragraphs talks about her being the most significant and creative female mathematician of all time, and attributes it to Einstein. That's a significant weaker statement, given how few women mathematicians there were before modern times.
Conversely, if the article had described her as the greatest mathematician and greatest physicist of all time, that would be a massive overstatement, of course.
What I was trying to get at here (and what Einstein probably was trying to convey to a lay audience, too) was that she was very (probably critically) important for the development of early 20th century mathematics, when many of the foundations of how we do mathematics today were laid, and that this was the case regardless of her gender.