The difficulty seems to be when two (or more) parties have different definitions of the same term(s), recognize that they have such different definitions.... and then one (or both/all) insist that the other one must use their definition.No, they haven't said that, in any way I've seen it. Several of us have pointed out that the physical skills require practice and maintenance they will not get in normal life. Deescalation can be practiced in a lot of ways. Recognition and target hardening can't be practiced meaningfully over a large period of time in classes. De-escalation can be practiced in classes, but doesn't seem to degrade the way physical skills do, and seems to require less practice to become moderately effective, and is something that can be practiced quite often in settings other than classes. Those are among the reasons many people train the physical skills most. There are other reasons, some of which vary by person.
Using Paul's insistance on a non-standard definition of "fight" as an example of certain words being meaningless would be like me showing a video of a BJJ guy getting run over by a bicyclist and saying, "See? BJJ isn't very good 'on the street'!" I don't agree with his definition, but he and I are aware of that, and I usually just acknowledge his definition and move on when it creates a point of contention. We manage to discuss this and other topics reasonably well in spite of it all.
To sidestep this issue is a skill inherent to discussion boards, I've noted. In the real world, people get on the same page as to what's being talked about very quickly.