Honestly that guy was not convincing at all. He pointed out how some journalists refused his request to ask apple about the address uploading issue and then completely speculated on the reasons why... then went on to makeup some BS reason as to why AllThingsD can criticize apple while still remaining in contact with him. After being in litigation with apple, this guy is clearly biased. If you read the comments people point out his agenda.
1. It's not silly to think that. See: Game Industry and Game Blogs.
2. You rarely hear about journalists getting blacklisted from events because a. the general public rarely cares or b. if they do they call the journalist, a 'whiner'.
The ones that don't get invited are those that buys stolen goods to be able to show off unannounced products.