How important is it to you that people understand asexuality fully?
In my personal life, I’m mostly concerned with making sure people understand where I am coming from. So when I explain asexuality to friends, I generally mostly talk about things relevant to me, and I tend to skim over things that are less so. For example, I tend not to frame things in terms of romantic orientation, since that is not especially helpful for understanding the way I happen to work. Sometimes I don’t bother to explain that I specifically identify as asexual (as opposed to “ambiguously queer”) at all, particularly with more clueless acquaintances.
On the other hand, when I’m actively in educator mode it’s very important to me that people understand well enough that they can be a reasonably safe space to ace people with all kinds of backgrounds. So when I’m going out and educating (as opposed to letting friends know something about me), I tend to be a lot more exhaustive.