I bought a DAK P229R in 2004, and loved it enough that I acquired a couple of more DAKs, specifically P229 "first generation" SAS models. (The Second Generation SAS has the DA/SA trigger system.) For myself, DAK is a personal choice, and has nothing to do with fear of litigation, nor a training crutch. Being an old sixgunner, the DAK offered me a pistols that pointed like my sixguns, and offered me a trigger pull like my DA sixguns. It is true that I work for a PD that specifies certain .40 DA autos to be used as primary duty pistols, but I was a bit of a rebel, as one firearms range sergeant would not let us qual with DAKs, so I had to make sure he was not on duty when I qual'ed.
It was funny; the Glock G22 was an approved duty pistol, as was the P229, but that sergeant interpreted "P229" to exclude any P229 that other than the original DA/SA configuration. Never mind that a G22 has no decocker, this sergeant would not allow anyone to qual with a SIG that did not have a decocker. Well, anyway, the latest revision of the weapon policy specifically allows both DA/SA and DAK. (We are a big agency that has to study things to death.)
Anyway, the DAK is a very good copycat of an S&W K-frame revolver trigger pull, and I mean a sweet K-frame trigger pull. Gunsmiths have made much money over the years making S&W revolvers have trigger pulls as good as my DAK SIGs have with their unmodified triggers.
The DAK is not a simple DAO, and does offer an intermediate reset position. The gun will fire if the trigger is pulled from that intermediate reset position, but due to less mechanical advantage, the trigger stroke is heavier. To get that light, sweet 6.5 to 7.5-pound trigger stroke, let the trigger reset all the way forward, just as with a sixgun.
There is much debate on internet forums as to whether SIG intended the intermediate reset position to be actually used in the normal course of events, or whether is was a fail-safe to bail out the shooter if he, perhaps used to another weapon system, failed to let the trigger reset to the farthest forward reset position, and needed to fire another shot, in a gunfight. (There are plenty of stories of panicked LEOs failing to let revolver triggers reset properly, back in the day.) So, if there is a "crutch" involved in the DAK system, perhaps the shorter reset is that crutch, BUT, some shooters actually LIKE the shorter reset option, and train to use it on a normal basis. The good thing is, it works just fine that way.
I guess the lack of DA-to-SA transition can be seen as a crutch, but if so, that principle would have to be applied to such "expert's" pistols as the 1911, which also have the same trigger pull for every shot.
FWIW, I don't dislike DA/SA pistols, and being a real fan of the P229, have two of them in that configuration, too. Sometimes folks do a double-take, when they see me writing or eating lefty, and carrying my duty pistol on my right hip. I am somewhat unusual, in that I do some things better lefty, and some rightie. Long DA trigger strokes tend to be something I do better with my right hand, and single-action tends to be a lefty thing. I had to start my police career with DA sixguns, and I have stayed with the right hip as the location of my primary weapon, on or off the clock, uniform or soft clothes. (I have trained to be functionally ambidextrous with any weapon I have carried for serious purposes.) If an injury or infirmity compelled me to carry my primary weapon lefty, I might well use of one of my two DA/SA P229s. I have indeed thought about this, as infirmities in my right wrist and shoulder, and upper back, may require repair/intervention in the not-so-distant future.
Wow; that was a long-winded, rambling way to say I like DAK, but also DA/SA!