Sexist comments like the one on the flyer are dumb, and these people deserve to be called out on it, but to imply they are keeping women out of tech careers is ridiculous (and in itself, sounds kind of sexist to me - like we are tender plants who change our career paths because some jerks like to see boobies).
If the flyer reflected the spirit of the event and the attitude of the organizers, I'm glad for the heads up so I know not to attend, free beer notwithstanding.
I wouldn't change my career path because there are idiots around, but there _are_ quite a few women who don't even want to embark on that path because it feels like you're entering frathouse central some days.
Especially since there are a few other (related) fields that seem to have a slightly lower jerk quotient.
If the flyer reflected the spirit of the event and the attitude of the organizers, I'm glad for the heads up so I know not to attend, free beer notwithstanding.