Although this essay is interesting and amusing (and a great rebuttal to many of the sillier objections to singular they), it does not address the main objection

Although this essay is interesting and amusing (and a great rebuttal to many of the sillier objections to singular they), it does not address the main objection I hear (and the one that I find compelling enough to ask that people not use "they" for me): I present to you as a singular entity. I find it disempowering to be addressed with a pronoun that might be understood as plural, as if you might address some of the needs of the multitudes within me but not others. I very much prefer to be addressed with a different pronoun if I'm being addressed alone versus when I'm being addressed in a group. Is that so weird? Now, on the other hand, I think that gendered pronouns are downright idiotic. So the pronoun that I've come to prefer is simply "it." I call many wonderful living things (think of an elderly redwood tree) "it" all the time, and it doesn't seem to bother the three nor anyone else. If it's good enough for it, it's good enough for me.