[satvikpendem]

It is the whole tree, actually. That's one reason I don't use context.

[omeid2]

That is simply not true. Only via a Consumer or useContext hook do you subscribe to hooks.

It is well documented and implemented like so.

https://react.dev/reference/react/useContext > useContext is a React Hook that lets you read and *subscribe* to context from your component.

Emphasise mine.