She definitely doesn't seem like an "LGBTQ+ ally", despite professing herself as one.

It's fine to break up with a partner who's not the gender you're attracted to. But she writes about it as if her ex has died. Many people stay friends with their exes who transitioned and have empathy for what they went through. But she does none of that. She dumps them immediately and doesn't describe any feelings of concern for what her ex was going through.

Gonna just say that that's a red flag generally. People don't need to like their exes, be friends with their exes, look back on their previous relationships and feel good. But I do expect some basic levels of respect towards their exes, and some empathy/understanding about what their side of the breakup was. And she's showing none of that. She's talking about them like they're no longer a person. And she doesn't seem to understand that they lost someone they love too.

She is also misgendering them at the beginning of the article. Anyone who knows trans people would know that that's not cool unless she has explicit consent. Presumably she's spoken about them disrespectfully to create more dramatic effect or whatever.

So no. She's not an LGBTQ+ ally. She's just a cis, straight woman who knows she can make money by writing about the shock of a trans person interacting with a "normal" person.