I have been coming up with a list of things Force Fins aren't disputed to be best for.
1. walking in fins (one of the reasons Chatterton loves em)
2. people who have issues with normal fins due to muscle/skeletal issues
I think you are missing a 3rd major group
3. Competitive Swimmers- as the kick technique and stroke used in Force Fins so closely matches that of a swimmer without fins, a well trained swimmer loves them.
I think force fins have now replaced split fins on the "jets vs _____" drama ladder.
I think a larger and larger group of people are simply replacing their splits and jets with Force Fins and they ignore the drama