> It doesn't create more room inside the phone, and Samsung had water-resistant phones with headphone jacks. It's basically designed to force you on to more expensive wireless headphones.

Well I was told that Apple viewed the removal of the headphone jack as a necessary step to a sealed, water proof phone. The two key reasons for phone failure are drops and water damage. Water damage will eventually be handled by a sealed device. So it’s not about “more room” AFAIK.