Action in progress does not necessarily have to be a temporary activity. It may be an every-day action, but it doesn’t necessarily have to be in Present Simple.
I will give you a challenge.
The world is changing or the world changes?
It’s a constant activity with temporary states and actions in progress. Is it Present Simple or Present Continuous? Constant or temporary?
I would use “The world is changing.” We can use Present Continuous for actions in progress. Progressive actions. That’s where the second name of Present Continuous (Present Progressive) comes handy to explain.
Progressive actions, actions in process, do not necessarily have to be temporary, though in most cases they are.
As in the example below, a progressive action can be pretty permanent. But it must not fool you to use Present Simple (Indefinite)
The world is changing. So we are.
Very often with the verbs become, begin, change, fall, get, increase, improve, start
My English is getting better
The population is increasing
His French is improving