I hope she’s great, but I can’t imagine you’ll find more dedicated or more aligned to the cause people than those that have spent a lifetime working to build everything that is Mozilla.
I can’t imagine they can’t find good people from within - why do you need to inject people from outside right at the top of the foundation?
I don’t see a valid reason to guess the gender of their users other than to sell profiles to ad providers. I can’t see how discord may evolve their discussion platform differently depending on the gender mix of their platform.