Why is the Samsung Galaxy S21 Ultra fast charging feature as limited as it is and a downgrade from its predecessor? What were the designers thinking?

Opinion pieces and viewpoints about industry issues, products, and services.
Why is the Samsung Galaxy S21 Ultra fast charging feature as limited as it is and a downgrade from its predecessor? What were the designers thinking?
Once upon a time, Nokia flagship phones were the toast of the world. 20 months after the Nokia 9 PureView arrived, is anyone still waiting for its successor?
2020 mid-range smartphones offer 80% of the value that premium flagships do, yet the former cost as low as a fourth or a fifth of the prices of the latter. Do you really need to buy a premium smartphone any more?