I don't have much to say about most of this (in either direction) but I will point out that academic cryptography is
not the same as academic (Usenix-style) security; cryptography is a junction between mathematics (as in, "the math department") and CS, where security is entirely a subtopic of CS.
I don't know what was going on at EuroCrypt in 1997, but I've been to workshops within the last 5 years, and the number of women involved was startling. Which, of course, squares with the statistics for gender parity in CS (bad) vs. mathematics (better).