JFC, you got busted for making this unwarranted statement and 75 posts later you're still at it! Fact of the matter is that the 450 cripples are mostly a class of recycled, slightly outdated 600's with a new lease on life. Pound for pound, they're by far the best entry level motorcycle in roadracing because they have practically all the benefits of a modern 600 - great frames, great geometry, great suspension, great brakes - but the power is toned down to be more like the old FZR400s, VFR400s, etc., which makes them an ideal entry level racebike.
450 racers typically find an older 600 racebike or trackbike, knock out one cylinder and they're golden. That recipe is not "gone with wind" and you know damn well it isn't. You and I busted our butts to try to make Honda Hawks and SVs into decent racebikes, but we still started with shit frames, shit suspension and shit brakes. We put a bunch of lipstick on those pigs and made them work quite well, but deep inside they were still pigs. They were never racebikes with lights, which is what the 600s are right off the showroom floor.
People see what Andy Palmer - and probably you too! - are doing with the FZ07 'R' and of course they don't want you screwing up their class and their fun. Those bikes are exotic works of art and are in a class of their own, exactly where they should be. This is not something new, the AFM did the same thing when Ducati jumped from 999cc to 1098cc - the club set a 250cc limit for twins running down a class so they wouldn't have an unfair advantage in the 750 classes. Another example is how thumpers were limited to 400cc in the 250 classes so that street legal bikes like the Husky 450 wouldn't crush the Ninjettes.
I'm sure you and Palmer and others will do marvelous things with the FZ07 and it's exciting to watch but that class is on a whole different level than recycled 600's turned into cripples. You guys can shout down and chase away Marcus and Ian and David and whoever calls you out on the cripples nonsense, but that still doesn't make you right.
Cripples may not be quite as interesting or exotic as the stuff you're building but pound for pound, dollar for dollar, they are by far the best entry level roadracing package. On top of that, the class is cool as hell, these people race together, bbq together and help each other out, exemplifying the AFM club racing spirit. And that's a good thing for everybody, even for you, because someday they may have the budget for one of those exotic FZ07R and might become your customers.