I got rid of my floppy discs years ago, and haven't looked back.
Not this old fallacy again: "Apple were right to remove
X in the past, therefore they must be right to remove
Y today."
Seriously?
Floppy discs died because they became useless: you needed a box full to distribute a major application, a drawer-full to back up a contemporary hard drive, and if a file
would fit on a floppy it could also be emailed instantly around the world. They died - even the 120MB floptical versions - because they accounted for a significant fraction of the weight of a contemporary laptop. Even then, Apple phased out the floppy over several years (remember the modular G3 laptops where you could swap the floppy/CD drive for an extra battery?) By the time Apple dropped the floppy completely, a USB floppy drive in the cupboard for the occasional legacy file was all anybody needed (and in my experience, those rarely left the cupboard).
In the case of the Headphone jack, though, it ain't broke and doesn't need fixing. The advantages of having the DAC in the headphones vs. the DAC in the iPhone (which needs a DAC anyway for its internal speakers) are marginal-to non existent. Samsung have cracked the water-resistance issue. That leaves the argument that the space used a headphone jack forces a smaller battery - and hence shorter battery life: well, although it looks like the X does beat the S9 on battery life, it does so with a
smaller battery (2716 mAh vs. 3000 mAh) so whatever the reason, its not because they sacrificed a couple of 100 mAh to fit in a headphone jack. Plus, I wonder if the battery life comparisons were done with
both phones running their bluetooth radios and, periodically, topping up the AirPod batteries from the phone.
Finally - and this is the big nonsense here - at the end of the day,
the presence of a 3.5mm jack has absolutely zero, nil, nada, no impact on anybody who does prefer to use Bluetooth or Lightning earphones.
I do, mostly, use BlueTooth, active noise-cancelling cans with my phone... but when their batteries run dry, they also have a 3.5mm lead, plus I have a couple of pairs of surplus, basic ear-pods, from iOS and Android devices past, secreted around various bags and locations. Also, on a plane, I want my decent headphones to have a 3.5mm input so I can plug them in to the in-flight entertainment.
The problem with recent Apple decisions like no headphone jacks on iPhones and all-USB-C connections on MacBooks, no more optical out on Macs etc. is that they strip out valuable little bits of flexibility, versatility and fall-back options. Its not innovation, its penny-pinching - on premium-priced high-margin products.