For the most part, I find your article to be well reasoned, but, like many ace people, you tend to discount another subset that exists of which I am a member. I am demisexual, which most people would equate with being asexual, but which is not necessarily the case. I am allosexual. Beyond that, I can get very turned on by total strangers of a variety of genders, sexes and sexual orientations because I am also pan romantic.
What makes me demisexual is the fact that my internal door slams shut quickly if I do not connect with someone on a deep emotional and spiritual level. I have no interest in casual sex or even sex with someone I merely find very attractive, but do not feel a strong commitment and attachment to. No matter how seductive they are or how physically appealing I find them, nothing is going to happen without a deeper special attraction.
Sex to me is more than just a matter of physical release and pleasure. It is an experience of the whole person, body and soul. Without both, it is meaningless and uninteresting to me. I can thoroughly enjoy the previews and trailers on a hypothetical basis, but have no interest in the main feature until I know that I would enjoy it because of a connection with the main character involved.
So, I am allosexual AND demisexual, but not asexual in the slightest. I am pan romantic, not aromantic. Technically, most people would say I fall somewhere on the Ace spectrum, but I am very different from most who identify as such. This is also a real thing.