[IS_CHANGED] Why does the function receive data only from widgets that are not connected by wires?

Could you explain who and why made it so that the IS_CHANGED function only receives data from widgets that are not connected by wires?

Why was it designed this way?

Why can’t I access data coming from another node, check how much it has changed, and decide whether to continue executing the branch or not?

Thank you,

PS: Maybe it would make sense to at least add a new function? IS_CHANGED_NEW?