I skimmed through it, and I think the only thing that is out of date is the section on `zone` in Angular. In october 2025, they changed to `zoneless` by default, which uses signals just like Vue. This was a long time coming imo, as the major criticism of Angular was how poorly update management was handled. Also Svelte runes aren't mentioned, as that came out three months after this post. Runes are essentially also signals.

Basically every framework now has a concept of * State - change this and the framework automatically updates UI and triggers effects * Effects - functions that run when parts of state change (or triggered by signals)

And almost everyone solves this with signals except for React.