Iggy, I'm hoping this isn't over the political line, but it's my sense of the reality of this situation.
First, this is about bottom line (maximization of profits for insurers couched as minimization of losses). That is likely intended to be accomplished by enlisting government via the usual mechanism ($$ + statistics ==> lobbyist ==> politicians' campaign coffers ==> legislation against manufacturers).
Manufacturers are the usual target of such things, and it may be true that reducing the performance of bikes in the crotches of the inexperienced and rash squids does reduce the aggregate amount of payable claims. At the least, even if that legislation against manufacturers does not come to pass, the insurers' ability to raise motorcycle premiums across the board is augmented (e.g., "see, we told you so, tried to get a fix, and when we couldn't get it fixed to our recommendations, we were left with no choice but to increase premiums").
Rigging the statistics is often usually a part of this process. Some of the composition of those statistics is probably true (though it excludes more relevant statistics such as training, age and experience), but it's very easy to get away with exaggerating or fibbing here when the statistics that are being tortured are so related to behavior that is the subject of public outrage. And that's where the super sport category gets hammered by squids doing wheelies down the freeway at 90 mph.