Could you explain the overarching goal of this, again?
It seems like it's almost tailor-made for Crossfitters?
Most one-sport specialists or two-sport dabblers will score relatively low?
It identifies functional imbalances. In one instance, with Ned, limited mobility in one hip was causing saddle sores. Without IDing the root cause a cyclists could be chasing different saddles, saddle heights, shorts, etc. with no improvement.
"Dabblers" typically do not score low. Elite athletes do. Cyclists, for example, typically have little going on in the way of core strength, and it shows in FMS core strength and balance tests. The lack of muscle in that realm makes them ideally suited to their sports, but limits you otherwise, and can lead to injury.
FMS has huge applications for skiing. Based on what I see in teaching full-time, most skiers are hampered by a lack of range of motion. Its is a technique thing, but physical limitations prevent the application of efficient movement patterns. So yeah, you can pay the ski school $725 to ski with me for three hours, but if your femur doesn't have internal range of motion, you simply cannot make an efficient short radius turn.
The above limited range of motion observation is not limited to age group. I've had this happen in everyone from high school football players from Texas, to 80 year old skiers who ski 50+ days per year.
FMS was developed long before CF.