*sigh*
You're completely miss the point. Loading doesn't defeat the point. At all. I am a handheld gamer and I'm telling you it doesn't. Nobody LIKES load times but they are 100% expected in this medium. It is a negative, no doubt. But you're acting like IGN should write inflammatory editorials about load times. They don't do it for any console; why would it change for handhelds? Your bullshit doctrine on how handhelds should play is irrelevant.
They do absolutely nothing to detract from the gameplay, unless, for instance, you're playing an RPG and every battle takes 10 seconds to load. As it is, though, PSP games load much like PSX games load... and guess what... there are so many fantastic PSX games that it defies logic. So it's pointless. Standards don't change because it's on handheld; load times don't suddenly become the knife in the heart simply because the game is on the go.
So reality check. IGN has said negative things about PSP a shitload of times. I could sit here demonstrating every single time they have, or you could go back into your conspiratorial shell of Nintendo love and accept that they are giving what they feel is honest criticism of both systems.