It's because they are fans of blizzard and do not apply logic to the situation. They see what is happening, but they've already decided that Blizzard is a good

It's because they are fans of blizzard and do not apply logic to the situation. They see what is happening, but they've already decided that Blizzard is a good company and wouldn't do it for bad reasons. So they think up facts to support their position. They think a multi-billion dollar company owned by Activision is doing it for the consumer and not for profits/real money auction house/etc.