It would have been graceful if the phone gave a pop-up on every boot with 'Your iPhone has a worn-out battery. Have it serviced at your nearest Apple retailer'.

It would have been graceful if the phone gave a pop-up on every boot with 'Your iPhone has a worn-out battery. Have it serviced at your nearest Apple retailer'. Apple was fully aware that people with slowed down phones would buy a newer model iPhone. And besides the free battery replacement for the old model they gave zero recompense if you bought a new phone because your old phone was performing suboptimally.