That's exactly what it is. It's what happens when the purpose of training is primarily for a competition-you start learning what works in the competition, not in real life.For example, the axe kick in my ITF club was very powerful, where we would lieterally stamp on the opponent's head or shoulders if we used (though very rarely and never at full power). In contrast, the WTF club uses it only as a kick to score points and like a weird, top-down variation of a hook kick. They expect us to snap it backwards, which is weird and feels like a kick that is only used to score points, not do damage.
There's normally a lot of crossover there, but less so for point-sparring comps.