They removed it so they could sell overpriced airpods and dongles, and simultaneously kill the 3rd party headphone market.

You think the literal few cents that a headphone jack costs would be more of an incentive than being able to force their victims to buy $300 disposable headphones?

How anyone could claim in good faith to not understand this, I can't even.

They even purposely gimp the USBC port they were forced to add so it doesn't support headset microphones.