Like anything else, if they do not have knowledge of the protocol then they must decide which technical experts to listen to. There are qualified experts who want an immediate block size increase and others who don't. They can make up their own mind. No one is being tricked.
'Not being tricked' and 'trying to trick' someone are two different statements. If you knew the real story behind Gavin's departure then you might understand why, albeit that's not really public. However, there are only a small amount of 'experts' who want 2 MB. You can exclude Garzik from this list though, he wants it for different reasons than Gavin (e.g. experience with HF's).