I thought that's the old blurb. In the article they specifically mention they want to work on CSS2:
> The focus for 2023 is to improve the situation of the layout system in Servo, with the initial goal of getting basic CSS2 layout working.
But seeing another comment in the thread, it looks like that was the last thing the developers that will be sponsored were working on anyway, so it makes sense to pick up where they have left off.