I interviewed a startup where one of the co-founders openly mocked me for wearing a tie; when he asked what my interests were (sports and music, amongst other things), I got criticized for not liking "Starcraft and normal programmer stuff."
The issue isn't one specific subset of tech industry culture; it's a result of the startup scene shifting HR roles to technical people who often don't have the soft skills necessary to deal with such tasks effectively.
On the other hand, at least you found out up-front that this particular company probably wouldn't be a good fit for you.
Until I see evidence that "bro companies" are more successful than normal ones, I have no qualms about shunning them.
I only work on products that espouse the latter.
Huh. When I started writing this comment, I did not expect to come to that conclusion.
(For anyone not familiar with them, they are a dating website that periodically mines their database and discusses observed trends in their blog)