It's clear why dry firing can be a great training method to improve trigger technique. It's especially important in disciplines in which the shooter must raise his rifle or pistol and carefully lower it to the correct position to execute the shot. If trigger technique is found wanting, that is, not straight back, shots may be off. This is especially important in 3P shooting, pistols, and air rifles and pistols. Learning to control a moving barrel and coordinating an effective trigger follow through. With Scatt trainers, shooters can analyze their barrel position when they dry fire as the Scatt system monitors the position of the barrel and when the trigger is pulled.
It's unlikely that dry firing is equally important when a shooting discipline uses fixed positions where the rifle isn't physically moved into place for each shot such as at a bench with a rest or perhaps even barricades and similar positions.
For more on dry firing as a practice technique, see
https://eley.co.uk/coaching-for-accuracy-improving-trigger-technique/ and
https://eley.co.uk/coaching-for-accuracy-the-importance-of-dry-firing/