Several problems with this article:

1: Critique against mouse and keyboard rings hollow. It's stuck around so far because it "just works" for a large number of apps. Touchscreens not similarly proven.

2: Limitations of the hardware is touted as a "great opportunity". Opportunity how? An opportunity to unleash gosh-darned ugly hacks to get around said limitations?

3: Written by Miguel de Icaza, known troll/closed source afficionado. Notably, nothing is mentioned about how hard it is to develop on an entirely closed platform (see iPhone troubles). Considering who the author is, not surprising in the least. Generally i try to avoid ad hominem but in this case the author's own bias gets ahead of dispassionate analysis.