People like having choice, it was never about saving space in phones.
If you look at which company (apple) and the time of removal of headphone jack (around the time their wireless buds were announced), you'll notice they removed choice so the consumer can only buy more expensive wireless buds, or many many dongles.
The "save space" is an absolute lie. The international (EU, Asia, etc) version of the iPhone has a dedicated SIM card tray. The US model? No tray, just a freakin placeholder where the international version has the SIM tray. Yes, there is a volume of space that can fit 2 headphone jacks on the US iPhone that is just empty.
Look at this iFixit video where they call apple out on it. The placeholder is huge. at ~1:17+
I always thought about this. What about those with disabilities, like ADHD? Can companies really maintain their "equal opportunity employer" position while stripping privacy in the workplace? That's an over generalization for moving to an open office.
They will make a few exceptions then at some point say "that's enough" when all the employees need is less stimulation and more privacy