A little bit of knowledge is a dangerous thing.
Anecdotal evidence, that is what you learn from direct experience, is dangerous because it has a greater impact then knowledge gained from data. This is a common pitfall for providers who begin to make decisions based on past experience (good/bad) and pattern matching. Take a step back let your hackles down and realize there is good I for here from knowledgable clinicians that you can learn from. You seem to be taking disagreement very personally.
As far as ALS providers staying out of BLS forum, well in my system I am a BLS provider so I think I'll stick around.
Let's take a few steps back and consider the OD patient requiring ventilatory and airway management.
First toxidromes. What drug has been taken and how is it effecting their respirations? Opiates and benzos are going to suppress respiratory drive as well as being sedative. Assume this patient is presenting w/ bradypnea, decreased O2 sats, hypercapnea and decreased LOC.
You begin to assist ventilations and insert an airway adjunct. As you're bagging them they begin to moan and move about as you've described. Consider at this point that the patient's condition despite not being reversed via narcan may have improved due to improved oxygenation and ventilation. So yes, your OD patient is demonstrating the behaviour you described, but I would argue that at this point reassessment is indicated which may find that their inherent respiratory rate and depth as well as improved LOC may make continued used of an airway adjunct unnecessary.