removing things is also removing manufacturing complexity and reducing the number of points of failure. If it costs $0.13 to add a headphone jack, but an increasingly smaller number of your customers use it, eventually there’s a tipping point where removing the feature is worth the grief the company will get from the noisy minority. Your manufacturing run of a million devices just got many thousands of dollars cheaper. Same with removable batteries, SIM slots, and CD drives in laptops, etc.