I... don't even know how to respond to that. Imagine if I watched a single youtube video about your field and immediately decided I knew what you did and didn't need to do your job. Maybe you didn't intend it that way but it comes across as very condescending.

I'm not sure what parts you think are unnecissary but everything I specifically mentioned (outside of the 2nd story wall thing) is.

You can't enter confined spaces without SCBA gear. People die doing that. We specifically have to watch videos of people dieing doing that to drill it into our heads not to do that.

Extracting a patient with a spinal injury from a wrecked vehicle without being able to cut up that vehicle is next to imposible without potentially paralyzing them.

People are stupid and they will plow directly into emergency vehicles and responders if you let them. Look up target fixation if you want an interesting read on that.

Emergency vehicles do get into collisions all the time ane every agency has procedures for transfering patients to another ambulance WHEN it happens.

The gear in an ambulance is all there for a reason. If it wasn't then the crew wouldn't want it there because it is taking up their space. Remember the US is massive and you may need to keep a patient stable for extremely extended periods of time to reach the nearest hospital. In the EU things aren't nearly as spread out. They can afford to not have bulky things like a LUCAS device in the ambulance.

In fact a lot of the reason our emergency vehicles are so massive basically just boils down to the services being so spread out. EMS need to be prepared for every possible situation because they frequently don't have the ability to call in backup or aditional gear in a timely manner. When you get to a scene, you have what you brought with you and that's it. By the time backup can get there the patient will be dead. Ambulances need to be geared for anything from a drug overdose to a school bus rollover. Firetrucks need to be geared for anthing from a flaming chicken coop to a derailed tanker of anyhdrous ammonia. Maybe if every single town had their own services that wouldn't be the case but the reality is most towns don't and even if they do it winds up being one firetruck or one ambulance with no budget to have specialized vehicles so you have the exact same issue.