The "slide drop on an empty chamber will wreck your 1911" gets trotted out everytime a "tuned" 1911 has hammer follow problems. Heaven forbid that it might be because of a poorly done trigger job done. The hardened surface of the sear is very very thin and even light honing can break through. If that happens then the surfaces wear quickly as the sear bounces along the hammer hooks. The wear changes the angles of the cuts and sooner than later the hooks won't catch the sear and the hammer follows.
Is that accelerated if the slide is dropped when the gun is empty? Perhaps, but its just a matter of time before it happens.
At any rate, the trigger reset cycle happens as the slide is moving forward and is complete much before the slide comes to a rest, so if any damage is done (and I'm not convinced it can) it doesn't happen when the slide slams to a stop. The only opportunity for damage is when the slide starts to move forward and the hammer is released and the hammer is caught by the sear in the cocked position. That actually happens before a bullet is even picked up from the mag which is why I doubt the theory, but your gun your rules so do as you like.
The scary noise part of the slide slamming to a stop is after any damage can happen to the trigger bits. I suppose there could be problems with the barrel and slide fit on tight fitting guns.
Modern fire control components are typically not surface hard. They are hardened tool steel all the way through. If you are using something with surface hardened parts I would suggest replacing them. It's not about sear wear; it's about sear
damage, which occurs when the slide slams forward, transfers all of it's energy into the frame instantaneously, which imparts momentum to the fire-control components, sometimes causing the sear and hammer hooks to become momentarily out of full contact. With the hammer spring under constant load, it forces the hooks past the sear and the half-#### slams into the engagement surface of the sear. If this happens often enough, it will eventually damage the sear and it doesn't matter how hard it is.
When the gun fires, the slide begins to move back under recoil energy, carrying the barrel with it for a short distance until the link pivots enough (once barrel pressure drops) to unlock. The trigger disconnects in the first few fractions on an inch and immediately swings back into position under spring pressure to catch the hammer when it begins to pivot back after the slide moves forward. The trigger resets as soon as the shooter releases it. This will happen AFTER the gun has gone back into battery. I don't know anyone fast enough to pull a trigger twice before the gun cycles once. It isn't possible.
As I noted above, striker fired platforms don't work this way so sear bounce cannot occur. Single action Browning derived designs do. Some withstand these forces better than others, depending on geometry. The 1911 design is over a hundred years old. It has its limitations, granted, but with modern parts and manufacture and some careful hand-fitting, they are capable of absolutely phenomenal performance with astounding triggers. Inherent in the design is the intent that when going into battery under full load (wiping off the slide release for example) it will be stripping a round off the magazine, nosing it up the feed ramp, camming the nose down into the chamber and the extractor grove up under the extractor, which is under tension, and then feeding the round into the chamber, stopping the whole moving unit on the softer brass material rather than the frame. All of this absorbs, deflects and spreads impact energy over a longer period of time.
That's how it works, and that's why dropping the slide on an empty chamber is not recommended, especially on guns intended for target work.