I'm not sure of the intentions of the cyclist since I have not read the article, but for myself I have what I call 8 meals per day. Some of those "meals" are liquid. There are a few reasons that I do this and I will name only a couple.
Time Constraints
I use a fast absorbing protein / carb drink immediately following training since there is normally too long of a span of time between training, commuting in a metro area and then to the home or office where I can begin to eat solid meals.
The second reason is that my solid meals are clean and bland tasting, which take me time to get them down as I work. I work in a high stress career that also involves impromtu meetings. Sometimes I will quickly down a drink before I have to go to a meeting rather than skip a scheduled meal.
When I competed in bodybuilding my meals would run together. By the time I finished one it would be time to start the next. As my metabolism has increased since upping the intensity of cycling training along with resistance training (I am not a competitive cyclist) I find that I need more calories and rather than fill those calories with "wasted calories" I would rather up the calorie intake with liquid meals between the solid food meals.
Again I would not speculate as to why the cyclist mentioned follows this program, but I can list why I do and that I have had success following this program for the past 15 years. I do want to say that I believe in following the traditional meal schedule using solid natural foods, but I have to juggle my career with training.