So we do it wrong in the DCFD? They are wrong in the FDNY? Boston? Chicago? Philly? Indy? Baltimore? I'm sorry that these thousands of firemen do not live up to your standards. The big 3-alarm fire in DC a couple weeks ago with multiple rescues on a high rise probably would not have went so well if they didn't make access without a hose line. We have fires in this city every day. It always works and I think we know what we are doing. Like I said before, if you are trained and actually know what you are doing, it isn't dangerous at all.
Let's not overstate the case. Even when performed by well-trained and highly experienced crews, searching a structure without the protection of a hoseline is easily the most dangerous fireground activity anyone will ever engage in. Training and experience make it less dangerous for sure, but it's never not dangerous.
I wrote this somewhere else in the thread but here it goes again: In urban areas, the truck crew is working with a hose line, it's just that they aren't the ones carrying it. Usually the engine shows up first and is stretching a line by the time the first truck arrives, so technically the truckies are protected by a hose.
I'm a big fan of the engine/truck (or squad) segregation of duties. That is the biggest difference between the US and Australia, and I think it makes the US system far and away superior, but let's not forget the initial attack is (to me anyway) the key to overall success of the operation.