I disagree. near-0% of the Gameboy's use-cases are audio-centric. I almost always played my Gameboy(s) with the volume down, so as not to annoy parents/sibling

I disagree. near-0% of the Gameboy's use-cases are audio-centric. I almost always played my Gameboy(s) with the volume down, so as not to annoy parents/siblings/whoever-else-was-around, and the games I played were all perfectly playable. In fact, some of them I enjoyed better that way, given that some sound was annoying, but that's purely subjective. When I go to the gym, 95% to 100% of what I want to do with my phone is put it in my pocket and listen to music. This is a use-case that requires audio, and so removing the headphone jack would make this entire very-common use-case painful. When I'm in my car, I want to plug my phone into the aux input (or the "aux cord" as kids call it nowadays) and listen to a podcast or audiobook. My 2006 car does not have bluetooth audio. This use-case is (if I'm being safe and legal while driving!) 100% audio-centric. Removal of the headphone jack would make this painful. When I'm at work, I have two primary usages for my phone: testing a native app I develop, and playing my music through my headphones. I play music far more often than I test the native app on my phone (I don't usually work on the native app). Removal of the headphone jack would make that primary usage of my phone much much more painful. I've just described ~65-70% of what I use my phone for. ~65-70% of my phone's entire usage would be made more painful and expensive if I bought a phone that for no real reason omitted a jack that is cheap, ubiquitous, and simple-to-use (compare the 3.5mm jack to HDMI in terms of reliability and simplicity), my phone would lose ~65-70% of its usefulness to me. Meanwhile, the Gameboy, since its purpose is to play games (which have sound and music that is optional to the experience of playing games), loses near-0% of its usefulness without having a headphone jack, because even if it had no audio output whatsoever (not even speakers), I can still play games without sound.