Both ??
Elmas
As people learn to shoot, they go though many phases or levels. Trying to find the right position, equipment, grip, hold, etc., etc. There are even several very productive posters on the board today that have gone through this process. A lot of them started with "well I have to have a perfect stance, grip, sight picture, etc., then I can get a perfect shot". I think that today you will find their opinions have changed, I know I have changed.
One of those phases is trying to keep the pistol pointed in the right direction, mostly to get your body used to the concept of reducing the wobble or movement. BUT, you can't reduce it all and it sometimes (well almost always) looks lilke a lot of movement with respect to that "perfect sight picture" of unmoving sights on the target.
And there are people that can shoot well above the average by doing a lot of things that are not the optimum. Trying the maintain a perfect sight picture to the detriment of sight alignment and trigger, is one of them.
But I can tell you that from my experience the distance in terms of effort and technique to go from 90% shooting to 93%, to 95%, to 97% is not linear. It is an exponential requirement in terms of refining your shot process and effort. On of the obstacles in getting to that next level is figuring out what works best and what to discard as a part of the shot process and training.
Until a pistol shooter really, really believes and trains to visually monitor the sight alignment above all else, (including sight picture) he will be limiting his performance.
Until a pistil shooter really, really believes and trains to accept the tactical feedback to complete the trigger process and maintain the sight alignment, he will be limiting his performance.
Sight picture, stance, grip, equipment, what you eat, think or anything else is down in noise level as far as completing an accurate shot goes. I know it does not feel like that now for a lot of shooters. Just continue the journey and when you look back, you will see the detours and pitfalls that delayed your process. I've seen them myself.
Train on one thing at a time. Train on trigger press, train on sight alignement (which is mostly what dryfiring or blank target firing is about). If you need to train on maintaining a good sight picture, that is great and necessary for most people as well. The body and mind must learn what we have as a goal.
Each training session should have one and only one training goal. Each shooting session should only have one goal, to evaluate the effectiveness of the training sessions. Basically, if you are traning, train on one thing. If you are shooting, perform and evaluate, don't train. Both of these may involve firing a shot or series of shots, but they are vey different.
AND, when you are performing a complete shot as part of the training process, put all other things aside. Sight Alignment and Trigger Process are the keys. They feed on each other and support each other in making an acceptable shot.
No, its not both for me. I found that it limited my performance.
Cecil