"From what we can surmise, the iPad is meant for the consumption of media, not the production of media content."
It's worse than that. It's meant for the consumption of media that Apple sells/approves.
Some reasons he listed are real technical limitations e.g. difficulty in manipulating large images due to RAM shortage. But such problems will not automatically go away just by moving to Android. i.e. they are specific to the problem domain, and not the device itself.
I am reminded of the maxim "If you're not embarrassed by your first release, you released too late."