~50% of undergrads at Stanford are female. ~30% of new Stanford computer science majors are female.
So more than 50% of Stanford undergrads are CS? Shit. Does that not sound like aa glut?
A proper CS degree teaches you how to think, how to solve insanely hard problems, and how to do so with a team of other smart people - often with different personalities.
What separates CS from other degrees is that it does filter out those without the horsepower or fortitude on both the quant side (algorithms) and the creative side (systems, architecture).
That means, that even if the SV bubble crashes, CS majors are the best equipped to handle whatever career is hot next - any hiring manager at Goldman, McKinsey, or F500 company X will tell you the same.