Key to shooting accurately is a crisp and reasonably light trigger. If you are not engaged in combat or defensive shooting, then using a DA trigger pull to shoot accurately at a longer distance seems pointless.
But, if you can actually shoot better at longer ranges double action then you are one of a select few.
But we seem to be drifting away from specifically discussing the Rhino again.
Its not.
The main reason you often hear what youre saying is, is that the shooter doesnt know how to shoot anything but a light, tuned trigger, from SA. Which is actually a handicap if you think about it.
The sights direct the bullet. The trigger simply lets it go. Focus should be on the sights, and/or target, depending on how youre shooting.
You can have the best trigger in the world, but if its your main focus, and youre worrying about it and what its doing, youre main focus, isnt on your sights, and where the bullet is going. Focus should be on the sights and/or target.
"Pointless" is often perspective.
I would still highly suggest you do both here too, get a hold of a Rhino, and learn to shoot it. They are interesting guns. Different, but interesting, and accurate.....
and learn to shoot DAO, which will benefit all of your shooting.
The Rhinos do make fast, accurate shooting a bit easier, and its most noticeable on fast, repeat shots, especially when youre used to guns like the S&W revolvers (SA's arent in the game here), as you dont get the typical muzzle rise. The sights are right back on target very quickly. So, even in slow fire, youre back on target fast, and can make another shot quickly, if needed.
Shooting singly is just as easy, but you do have to stop, break your grip and concentration to cock the gun each time, require the target and get settled in, and then make the shot.
Or, you can just present the gun, put the sights or gun on target, and just shoot, and shoot, and shoot, as you feel necessary, and at any cadence, you feel is appropriate.
And that might be at 3 feet, or 100 yards.