You've pre-conditioned your conclusions based on your personal assessment of the size of the headphone jack.
Do you mean because I said "tiny"? That's because relative to the size of the iPad, the space is tiny. This thread is about the iPad losing the audio jack after all. I agree that for a phone, the space saved is (or should be) much more significant.
Without that data, all of this is subjective. In the end, all that matters is what Apple wants to accomplish
I agree with this as well.
An even more important question... can most people even TELL the difference in sound quality (between wireless and wired)??
I'd be willing to bet that, given a blind test the vast majority of people couldn't tell.
I categorized that question under the first question (do most people care about the advantages or disadvantages of wireless). I figure people who can't tell the difference in quality will simply make their decision based on the other pros and cons. The question you quoted is of course only pertinent to the [probably smaller group of people] who can tell the difference, or who even care. If wireless audio quality can catch up, this group could be won over as well.