Still don't understand why people are comparing this to things like the removal of the floppy disk and cassette players. Each of those things were replaced by better technologies. Ditching a wired technology with a wireless one isn't the same thing, but rather something that complements existing things. For example, Wi-Fi isn't a replacement for Ethernet, for without Ethernet, you generally wouldn't have Wi-Fi.
From the interview, it just sounds like Apple couldn't fix a supposed issue that they were having. Were they telling the truth, or was it lazy engineering? We'll never truly know.
There was literally nothing wrong with the 3.5mm jack.
It's a massive port to do one thing only.