I think that is a stupid article.
First off, they said all the same stuff when the first video iPod came out...
Secondly, the first part of the article says this:
"Steve Jobs' company is keeping a civil, if embarrassed, silence on one of the potentially most lucrative and controversial uses of its handheld jewel: porn."
Then later in the article it says this:
"Apple spokeswoman Jennifer Bowcock says the company doesn't condone iPhone porn distribution and will ban adult content from official applications, just as it has restricted adult content in the podcast section of the Apple store."
That doesn't sound like Apple is being "silent" about anything to me.