This article is kinda bullshit tbh, she doesn't understand us. As much as the writer seemed a bit empathetic, she never points out the major problem that we have: We're just, plainly speaking, unattractive. Although exceptions exist, most of us are incels simply because we're unattractive, not because we don't know how to approach, and not because we don't understand social cues. Most of us approach women, or at least have tried to, but all of us know that it's all over the moment she puts her eyes on you.
She is lowkey denying our problem, and just like other people, she is lowkey delegating all of the blame on us, because you can change the way you behave relatively easily with some effort and therapy (just some emphasis on the words, because it just so happens that she is a therapist in this particular area, and she can help you out, for money).
You wanna hear the truth? More often than not, it isn't your fault. You were born with a set of genetic traits that you can't control, and to change your situation in the slightest would require sisyphean amouts of effort.
TL;DR: She can't get us because most of us aren't incels because we're socially misfit, we're just ugly, that's it.