It's still controversial, in part because it's still relatively recent, but removing the headphone jack. No major manufacturer's flagship phones come with headphone jacks anymore, despite all the PR ridicule they initially flung. In another 5-10 years, I doubt any new phones will be manufactured with headphone jacks.
You can buy a Galaxy S10e with a headphone jack today.
But beyond that, we have to define what being _correct_ entails. It is _because_ of Apple that other manufacturers followed suit and their justification was ostensibly for making a slimmer phone (fitting more components into the shell) which was quickly proven to be irrelevant. I don't romanticize about the headphone jack but the premise behind the claim that Apple could be "correct" to remove it doesn't seem foundationally solid as an argument (let alone from a historical standpoint).