This question, in one variation or another, has been popping up almost monthly on the various forums I frequent ...
Of course, it could have something to do with S&W pistols starting to become popular again.
All things considered, the older production S&W semiauto pistols had some occasional issues which were addressed as time passed (as can be said for virtually every other semiauto pistol made by a major manufacturer), and the current production models are reliable, rugged, accurate, well-manufactured and able to account for themselves shoulder-to-shoulder with anything else being produced in their price range ... although I give a slight edge in preference to their metal-framed line.
I certainly didn't start out as a S&W semiauto pistol fan enthusiast/owner/user, preferring Colts ... and later Ruger P-series pistols ... but the S&W 3rd generation models have acquitted themselves well with me.
I think I've attended 7 armorers classes for their pistol lines, and I find their folks very, very helpful. A couple of parts still require fitting in the metal-framed lines, but the lifetime warranty philosophy (which generally includes free shipping both ways to return a new pistol to the factory) makes that a non-issue for the regular owner. L/E owners/users have the support of the S&W Academy & factory when it comes to having their folks trained as S&W armorers, too (like the other major manufacturers, although S&W has a VERY large training program through their Academy that might surprise a lot of people).
I've carried their pistols for 15 years at this point, and I'll be carrying them until I retire, since they were just selected again after a long, reasonably extensive T&E/review/recommendation process (TSW models this time). Some of us once sat down and estimated that we've watched upwards of a million (or more) rounds fired downrange since we adopted S&W pistols about 15 years ago, including personally owned pistols carried as off-duty weapons, and they've acquitted themselves well without significant, major problems.
Their SW1911 models are quickly changing minds about an affordable, reliable, out-of-the-box .45 ACP pistol and are setting new standards in that market category, too.
Magazine disconnects? I've only seen or heard of a couple of instances where either left-handed shooters could cause the magazine catch to be unintentionally engaged, or a leather holster wasn't really properly cut & molded to clear the mag catch button ... and the magazine catch was unintentionally depressed far enough to release the magazine and disconnect the trigger. The more common issue I've seen occur was where someone failed to properly insert their magazine so that it fully engaged the magazine catch, and the magazine dropped enough to disconnect the trigger after the first shot was fired. The funny thing is, that in virtually all of these instances the pistol wouldn't have fired another round because the magazines had either fully dropped or partially dropped enough to cause feeding problems with the slide's stripper rail picking up the next round, as well as disconnecting the trigger.
Being able to fire a chambered round in the middle of a 'combat reload'? Please ...
Most folks I've seen haven't bothered to specifically train for that specific instant recognition and patterned response to unexpectedly occur in the middle of their trained reloading techniques, let alone in a real threat situation where fine motor skills are diminishing faster than many folks can realize what's occurring around them ...
Maybe it's a concern for some folks, and that's certainly their choice. It isn't something I stay up late worrying about, however ...
Location and operation of the slide mounted decocker safety? Well, Walther started that particular ball rolling in the late 20's, wasn't it? Somehow people who express a particular fondness for some of the Walther pistols never seem to mind the slide mounted safety decocker lever. Maybe they simply adapt to it.
While we recommend our folks carry their S&W TDA pistols in the ready-to-fire condition, a couple folks prefer to carry theirs with the safety lever depressed/ON, and they naturally have to meet the same timing standards when it comes to qualifying. I've watched people carrying 1911's fail to remember to depress and disengage their thumb safeties, too. I suppose it's a training issue in a basic sense, huh?
Then again, I've met folks that preferred the presence of the magazine disconnect and slide mounted safety levers for officer safety reasons, and that's their preference and prerogative when it comes down to it.
They're a fine pistol for the money, and are commonly available for less than the advertised retail prices (again, like those from other manufacturers).
Now, for those folks that have some philosophical/personal/political axe to grind ... I'm sure you'll hear from them, too.