I feel like we've had this one before.
Short answer: Don't judge algorithms if you're not sure how exactly they work
Somewhat longer answer: People seem to assume that POI completely throws out POS which isn't true. It merely enhances POS and it does so in a way that does not jeopardize security. In fact how big the difference between POS and POI actually is we'll only see "in the wild". If you behave like a bagholder, don't transact or receive anything then POI will behave almost exactly like POS because those additional factors simply don't come into play (with the exception that you importance will decrease as others importance increases). However if you do transact and play an active role in the economy that will affect your harvesting power. How much ? That is what the real world has to show us.
Ofc I'm not the best person to answer as I'm not the mind behind POI but that should sum it up.