it’s highly personal, so ideally you ask the individual and include their consent in your article. that said, generally speaking, trans people will use their current pronouns, even referring to their pre-transition selves. this is also what’s generally considered polite if you don’t know them, so it’s pretty suspect that the article is not doing that
still, something about malice and incompetence…
i would have appreciated hearing how the author, personally, found capitalized pronouns to be affirming, because, absent that reasoning, it really does seem like it’s to set up a deferential power dynamic. i don’t really mind respecting the pronouns anyways, but it does mean i don’t really want to be friends with Them until i understand what’s going on there better