No, it didn't used to be you're male or female.
In traditional western society that's what we're taught. You are either a boy or a girl, male or female. Blue or pink, a doll or a truck. That is what I was presented with when I was growing up. There were no alternative options...that's not to say
they didn't exist...they just were not given as an option. Nowadays some parents are a bit more open minded and are allowing their kids to develop their own identities by presenting them with options rather than pushing the identity of "boy" or "girl" at the beginning.
Intersex people did not just start existing this year
....I've been horrified by the transphobia on FSU over the recent months, but it's not all that much better to celebrate suddenly accepting something that should have been known and celebrated and accepted decades if not centuries ago.
People exist in different spheres. Someone's experience as part of a particular community comes with knowledge that is often exclusive or inherent to that community as it affects them personally. For someone who is
not part of that community, it's unfair to expect them to just know something everyone in that community already knows.
I'm in my 30s and not part of the LGBT community. I knew about male, female, trans, straight, gay and bi-sexual. Queer is something I just learned about a few years ago when the Q was added; I'm still trying to learn what non-binary, cisgender, gender fluid, etc. are. But I'm open to learning because I want to understand.
It's like what's going on in America right now. As a black person, I've known about systemic racism my entire life because I am part of that community. However, there are a lot of non-black people who are learning about it for the first time. Like you said, I want to say everyone
should have known about it because it's been going on for centuries in this country, but I understand how someone who is not a part of the black community may not know because they don't see the world from my perspective. But people are waking up to it and educating themselves about it and, hopefully, change will come from it. I hope the same thing will happen for the LGBTQ+ community.
I say all of that to say sometimes ignorance isn't malicious--it's just ignorance: a lack of knowledge or information. When you have knowledge that others don't, sometimes you should try to educate them and open their minds rather than hold what they don't know against them. However, "stupidity is the deliberate cultivation of ignorance." Not everyone is receptive to knowledge; a lot of people like being ignorant and when that's the case, there isn't much you can do.