Why is it unreasonable?

This isnt demanding apple to retrofit usb-c to old phones. This is telling them to stop producing new phones with lightning, and instead use USB-C.

This is highly relevant for India as it’s a price conscious market, and Apple sells a lot more older models than elsewhere, specifically Europe who passed a similar law but on new models only.

And if a student figured out how to add a fully functional usb-c port to an iPhone X, I’m sure apple can figure it out for an iPhone 14.