It is instructive to look at where monopods are most often used: sporting events and wild animal shots. In all these cases, it is not "how many stops" a monopod can provide. It's just about increasing the number of shots to the goalkeeper.
Competitive sports (football, soccer, etc.)
Monopods are ubiquitous on the sidelines of professional football (international, American, etc.). For sport shooters, a fast shutter speed is required to capture the photo as the subject moves quickly. All in all, people like the perfectly captured moments for these types of sports photos without motion blur. There are exceptions where a blur of movement in the background is desirable, but these shots are rare and tend to be more artistic than conventional sports reports.
Sport photographers must be able to move and move each other. Thus, the tripods are difficult to handle, impractical and, when they are close to other sports photographers, inconsiderate. But when they try to capture events all over the field, they have to use their longer goals, which are heavy. So, stability is necessary. The photograph could kneel and use your knee as an elbow to give you some stability, but this prevents them from pulling from a low position and also reduces their mobility. A monopod allows comfortable shooting while standing and the ability to move at any time. Even if a monopod is a compromise tool, it turns out to be the best tool for this shooting situation.
The distances are much larger in autosport. As a result, we rely more on telephoto lenses than on football / stadium / arena sports. But there is an additional element that is not present in team / stadium / arena sports: controlled motion blur is actually desirable. Very fast shutter speeds in car racing yields boring strokes, where the complete movement of the cars is stopped – the wheels do not look like they are spinning. Aside from perhaps a very loaded front corner suspension when the car brakes abruptly in a bend, with a fast shutter speed, the cars have the appearance of being static and parked on asphalt rather than dynamic.
Thus, autosport photographers slow down the shutter speed, up to perhaps ¹, depending on the speed of the cars from the photographer's point of view, the focal length, and so on. But that's not enough because the whole car will be blurry. The photographer must also move the camera to follow the movement of the car. This requires a lot of practice, and even when performed by experienced professionals, it results in many shots of inferior quality (unusable). This plan is only really effective for panning, which turns out just perfect for a monopod: the monopod does not restrict the panning axis (yaw axis) at all, while suppressing or reducing the others. axes of movement. .
It is for this reason that most lenses with a tripod mount and an image stabilization have 3 modes of stabilization. image: disabled; complete on; and tripod mode, which means that the SI ignores the pan / tilt movement in its stabilization. Not especially for sports car, but to follow subjects in lateral movement with a telephoto lens.
This is very similar to the competitive sports situation, but often at much more distant distances, similar to motor sports. In this case, the camera support is chosen according to the particular subject to follow. Birdwatchers often sit in the same place or move very infrequently and very slowly. A tripod is therefore desirable for stability and help withstand heavy duty charging. Other games may require more photographer mobility, so the hassle of moving and installing a tripod all the time would justify the use of a monopod.