I would expect that most women don't encounter sexism in their everyday lives. And when they do, it will be fairly inconsequential - like street harassment, which honestly barely qualifies.
Then either things are really damn different in NZ or you're basically blind*. Much of it
is relatively inconsequential (but then there's plenty of cases where it's not, as well), but in the US it's also completely fucking
pervasive in most areas. Gender expectations and poor reactions when they're violated, even a little, is goddamn
everywhere; take a half-hour or two in an area with heavy foot traffic and pay attention to what the gender differences in posture and the way people comport themselves for one of the more blatant (and regularly overlooked) examples of it -- if I had money I could bet, I'd bet you you'll notice a difference that isn't explained by difference in bone structure or common footwear even in that short of a time frame.
You can also eyeball just about any authority position that gets approached with regularity (professors are really good targets for that if you've got access to a campus) for a while, and see how the different genders approach, and how the prof reacts, especially when the approach is counter-normative (and I can guaran-damn-tee you you'll notice what's normative for your area in short order if you've got even the most remote of observational capabilities), just as another example. Much of it is relatively small, or at least not overt, but even tiny shit adds up when it's constant, and it very much
is constant.
And yes, if it somehow bloody matters, it hits just about everyone. It just hits some harder than others.
*Though, to be fair, a lot of this shit is so commonplace many people just filter it as background noise, stuff that happens all the time and is perfectly normal, even when the slants are
painfully clear and the consequences fairly obvious if you
think for two seconds. There ain't nothin' normal about the gender difference in inclination towards defensive posture in public places, just as a particularly painful example, and that's something a half-blind scrub drowsing off on a mall bench can notice.