I really like a lot of Android phones and I also agree there are many things about Android handsets that are appealing like SD card storage, water resistant handsets, and and much better battery on a lot of handsets.
Look I'm not saying people want to carry an adapter. I'm just saying I think it will be such a minor development that most people will just accept it and carry on. Clearly if I'm wrong then Apple will have made a huge miscalculation here and people will be turning to Android sets in their droves. But like with many changes that seem like an inconvenience at first, I just think it won't register in most people's major grievances over time.
Eg. The lack of a removable battery. Something that used to tick me off something chronic about iPhones. Now its just normal across both iphone and android handsets to have a non-removable battery. Nobody wants to go to a specialist to change their ageing battery or carry round a charging cable and an external battery all the time. Chargers and external power packs are way more clunky and annoying to have to carry round. But its the new normal. People live with it. The world carries on.
And if I compare the inconvenience of carrying round an external battery pack with the inconvenience of a minuscule bit of added headphone length, I'd say the battery inconvenience rates way higher.