The processor, for example, has a 5,000 page technical reference manual[1]. That's just describing how to use the chip. It doesn't go into detail about how each part works internally. But to the layman it's just a 2cm^2 chip so how complicated can it be?
Everyone wants the sausage but nobody wants to learn (or even know) what goes into it.
[1] http://cache.freescale.com/files/32bit/doc/ref_manual/IMX6DQ...
This is something he is right to be concerned about. No matter how many warnings you slap on something that it is currently only suitable for advanced users, you will always get a bunch of people who want some shiny new thing and buy it and then bitch and moan that it doesn't have Apple-style end-user polish.
It is all being developed in the open (in all senses of the word), so if some other entity who does want to get into the mass manufacturing and support side thinks doing so is worth it, that can always happen.
In the long run this benefits everyone, of course, but it's only the techies who can actually use the source, and that's why it's mostly the techies who care about it being open.