The smallest iPhone sold now is 128 GB. The iPhone 5C, sold in 2015, had 8 GB internal storage with no expansion options. 439 MiB is a full 5% of the total storage capacity of the iPhone 5C, completely ignoring the amount reserved for the OS that's completely unusable to the user.
The logic used here hurts lower-income people and contributes to climate change by encouraging poor use of device resources -> shorter device lifetimes -> more e-waste and wasted energy.