When people complain about "Slide Stop Nazis" or "Clip Nazis", it's about folks who seem to think there's only a right way to do anything (or call anything) and they have the OLDEST copy of the "rule book" stashed in their gun safe.
I don't think the person using that term was trying to make a personal attack on anyone here, but was describing a mindset we see too often on forums like this.
Calling a multi-function lever just one thing doesn't change the fact that the lever can be used to STOP the slide (automatically) or release the slide, if that's your choice as a shooter.
- That same mechanism in some guns (like my CZs) can be pulled out of the frame and it becomes, in effect, a take-down lever, too. Three functions for one metal part!
I've seen "Clip" used in a major gun maker's ad to describe a magazine. Technically, a CLIP and a MAGAZINE are really two different firearm parts, so when people are told that clip isn't the proper term for a magazine, it's generally done GENTLY, with an explanation of why it's not being used correctly when the term "clip" is applied to a magazine.
I've also seen the terms "slide stop", "slide release", and "slide catch" used interchangeably. Some owner's manuals actually suggest that you can release the slide by pulling back on the slide and letting it go forward,
or you can press the slide "stop/catch/release lever" to let the slide go forward.
S&W focuses on pulling back the slide and releasing it as the method of choice. But other gun makers suggest doing that or pressing down on the slide stop. Kahr says AVOID slingshoting, and recommends pressing down on the slide release/slide catch as slingshoting with a Kahr might not let the slide go fully into battery. (It's in all their user manuals.)
- I've seen extended slide releases advertised on gun sites, but I don't think I've seen many extended slide stops offered for sale. If extending that lever a bit wasn't done to make it easier to press (when releasing the slide) without changing one's grip on the pistol, why would anyone bother with extending the lever?
NOTE: The U.S. Department of Defense changed handgun training some years back, dropping the slingshot (or handover) slide release method and teaching instead, pressing the slide stop lever on semi-autos. It worked with all guns used by the U.S. Military.
The change was due to the fact that they were having a lot of problems under combat conditions, in Iraq and Afghanistan, with slides not going fully into battery when they were released using the slingshot method. That generally meant racking the slide again, and letting it go forward, losing a round, losing time, and maybe repeating the problem.
Part of the problem in Afghanistan and Iraq was likely due to the fact that so many G.I.s wore gloves -- as protection from the harsh climate (hot and cold!) or because of the rocks and rubble. When the DOD changed the handgun training program to have the shooter press on the stop lever after a reload, the frequency of the problem was greatly reduced.
A lot of folks prefer the handover method, with the hand over the rear of the slide, pushing the slide back forcefully. They almost never have to press that little tab on the lever! That works very well, and
unlike the traditional "slingshot" method, you don't really have to take the gun off of a potential or actual target -- you can keep the gun up and on target as you do a mag swap and then release the slide. With traditional "slingshoting" you must pull the gun away from the target to properly grasp the slide.
The Hand-Over Release method works well with most semi-autos, but doesn't work well with Beretta M9, because using the hand over the rear of the slide can unintentionally decock the M9. If you're shooting a SIG, S&W or Glock, or even a CZ, it's a non-issue. As they switch over to SIGs as the handgun of choice in the Army (and elsewhere), maybe we'll see the training changed to include the hand-ever technique, but I'll be surprised if they do.
I would note, too, that a few older semi-autos had slide catches but no lever that could be used to release the slide. When nearly all gunmakers started adding an external lever that COULD also release the slide, it became a popular modification. Calling what a lever DOES (not just what it's been called) sometimes has merit, if you're talking about GUN FUNCTION and not GUN TERMINOLOGY.
Call that little multi-purpose lever whatever makes you happy, but don't be too dogmatic about it in trying to force what MAKES YOU HAPPY on someone else. Just remember: what you call it doesn't limit how it's used or dictate how YOU CAN OR SHOULD use it.
But, if the owner's manual says DON'T RELEASE THE SLIDE USING THAT LEVER, that's different.