I agree that we should try to stack the deck in favor of the occasional intubator, which is exactly why I don't support the idea of adding extra, unnecessary steps to the procedure. By using a bougie and suction on every intubation, you are literally requiring tools and steps that are not necessary the large majority of the time. How is that helpful?
Here's the thing: Among new or occasional intubators, the large majority of difficulty with intubation comes from not properly recognizing or visualizing the anatomy. Another common difficulty is in visualizing the glottis but not being able to pass the ETT. Both of these problems can be mitigated by using good progressive laryngoscopic technique along with external laryngeal manipulation. Because the problem of anatomic visualization (getting a view of the glottis) is a far more common one than massive airway contamination, I think the best use of your right hand is ELM, rather than suctioning a pharynx that has nothing in it to suction.
As far as the bougie: Even though I don't share the opinion, I can definitely see why so many people think using a bougie on every tube is a good idea. A bougie does, objectively, make many intubations easier. How can that be a bad thing? For two reasons: First, it *usually* simply isn't necessary, so it adds an unnecessary step. Second: Again, the large majority of difficulty with intubation comes from not properly recognizing or visualizing the anatomy. This is usually a technique problem, which should be addressed rather than covered up with another tool. The bougie does indeed make proper airway instrumentation and axis manipulation less important, which is a good thing if you are legitimately having trouble with an airway. It might not be the best thing though, if you are trying to improve your laryngoscopy technique. Requiring new intubators to use the bougie on every intubation because some intubations are difficult is like requiring someone learning IV's to use a vein finder or ultrasound on every IV start, because some IV starts are difficult.
IMO, prehospital airway management training and protocols should focus on preparation, solid, basic technique (positioning, progressive laryngoscopy, ELM), and quick, smooth transition to use of a bougie or suction when necessary. I also advocate for NOT using a stylet in the ETT.