Ok, so these seem biased, because majority of Android smartphones can in fact be use as equal devices - you can connect a keyboard, fire up VIM or anything else in chroot and you are good to go.
If battery power is what you are after - not only there are amazingly long lasting android phones, there are aftermarkets batteries for any model with removable lid.
He even directly addresses the point iOS devices are blackboxes.
So yeah, I call bullshit on this one, even thou I can see where he is coming from with this.