Gary "You must be joking" Ruska here,
Agreed that being able to take care of critically ill patients and taking responsibility for their care is what makes one a good doctor. However, it does not a surgeon make.
Anyone who has done general surgery residency or a portion thereof at a major academic center has stories of community general surgeons who won't come into the ED in the middle of the night to see someone with free air because they "would be better treated at a tertiary care center". Are these practitioners not surgeons? No, they are still surgeons, despite their refusal to handle critically ill patients.
In addition, you must be early in your training to be so naive about the day-to-day practice of surgery. It's not all trauma, ex laps, Whipples and thoracotomies all day everyday. For the most part, surgical practice is relatively mundane, as each specialty has it's bread and butter and their share of the exciting stuff. The bread and butter for oral surgeons is wisdom teeth and implants; the exciting stuff is trauma surgery and facial reconstruction. Take any surgical specialty and you will see that there are similar trends. If you think that all surgeons are taking care of critically ill patients all day, everyday (or even most days) you need to really take a good look at practitioners in your specialty and what they do after they finish residency.
By your metric, most surgical subspecialists (ENT, PRS, Urology, etc.) would not be considered "true" surgeons. Fortunately, the ACS does not share your thoughts on what makes a surgeon and, to be frank, they probably are in a much better position to make such assessments.
Also, no idea where you got your paradigm of OMFS training from...it's at least 4 years and only a minority of that time is spent taking out teeth. Ask around.