but don't make any of this out that Apple isn't trying to get each and every one of us to keep buying these devices each and every year.
Well, that's advertising. I think we can let individuals decide what they need and don't need to buy. Not everyone buys a new phone every year. One reason is that the iPhone holds its value for several years; hence, trade-ins get a higher value. These older phones are then sold to people who can't afford new ones. And as you say, older phones are just as good and "perfectly workable," right?
Now, if the new phones are made with recycled materials as much as possible, that's even better than 5-10 years ago, right? Unless we don't make phones at all, there will be some middle ground, right? You may have found the presentation cringe, but at least compared to rattling off stats hurriedly, it was definitely good.