1) Nobody claimed that there will not be a second hand market. The prediction was that PRICES will get down.
2) People who can´t afford the latest model buy ONCE a used one - and stay with it. This is called "MARKET SATURATION" of the second hand market. As is more and more for NEW Smartphones (of all manufacturers) .
These are logical reasons for falling prices in the future.
The error53 problem will be well-known soon - so the risk to stay with a bricked phone will be priced-in for used phones. Means: LESS $ as before.
PLUS: Smartphones have already all you need since years. It is and will be less and less ways to convoke intelligent people to buy a new phone for about 800-1000 USD without any evident and significant advantage in comparison to the latest or even before-latest generation.