BS?
Early hour pilots, even some high hour pilots, tend to operate their aircraft via muscle memory with insufficient emphasis on external cues, particularly when load shedding under stress.
For these pilots, exposed to an aircraft with the rotor going the other way (I'll leave the question of right or wrong to others) they may.......have difficulty assimilating the response of the aircraft being different to their expectation......
While figuring all this out, the earth may arise and smite thee, although it seems for the Cabri, without the permanence associated with other aircraft types.
Something to consider for those without the mighty experience beholden to some of those on these fora.