Well, he's trying to show off these cool new things and it's being hindered because some dip**** blogger from some site no one cares about wants to update their site with 20 pictures per minute. And when he asks politely, the majority just laugh uncomfortably at him.
So yeah, Jobs had a good reason to get a little noticeably angry.
What seems so apparent to you didn't occur to Apple. They could have password protected theri network in less than a minute.