They could be made t run TouchID. I've said that now at last 5 times and you ignore me because you can't properly argue.
Onboard storage and those other factors are all part of what makes a phone experience, they all matter, so if you keep saying that because 16GB suits a lot of people, we can say the same for old processes, where a lot of people don't need anything more than an A5 and A6, and therefore by your argument, apple should stop putting them in the baseline.
Again you ignored examples of 32GB staring phones. The other premium ones at 16GB are far cheaper than the iPhone and are probably mid tier phones anyway.