Ah, a lot of people do use LLMs for editing. And when I read this I can just hear GPT-4.x's style and tone of voice in my head.

None of the following are smoking guns, but together... well, either it's GPT or it's https://xkcd.com/810/ .

* Bullet point lists

* emdash

* extensive use of bold

* sentence fragments

* "Here's the good news:"

* juxtaposition over emdash: "This transition is happening — but we’re not being ignored anymore."

* Bullet points that simply MUST have a conclusion " The entire workflow? Gone." , " not just for me, but for every user who deserves to choose how they compute.", "And they shouldn’t have to." , "But we have to start over."

* "I hope it’s done right — not half-baked, not bolted on."

* "We lost an ecosystem."

* "That has to change. / And it starts with every compositor agreeing on what “accessible” actually means. "

etc....

Maybe it's

A) A human who is a very skilled writer with a particular style

B) GPT4.x

but my best guess is

C) Both: Human did the rough draft, then had GPT4 edit it into shape.