So there's (IMO) historical evidence that it's not inherently a "male" field; which I see as evidence that the imbalance is unexpected and undesirable.
(That said, I can't speak to why it's an "urgent" priority)
[1] Babbage invented the mechanical calculator. Ada realized you could do calculations on something other than numbers. IMO that makes Babbage the first computer engineer, and Ada the first computer scientist.
[2] one article of many on this: https://digitalfuturesociety.com/programming-when-did-womens...