But they got rid of the PU suit and they are still beating the records. I admit that technique is probably being improves but that could be said for running and they don’t break records at every meet.
Technique and coaching mainly I guess, running will always be right foot, left foot, right foot, left foot, etc, cycling will always be pedal, pedal, pedal, pedal, and a big dose of luck. Look at the swimming finals and there’ll be 8 different people doing 8 different interpretations of the same stroke, and it’s the coaches job to try and match the swimmers with their perfect stokes, tweaking them untill they’re fastest, so every year they’ll find a new way to measure and tweak it.
Agree there are fat too many though, compare to track cycling and even if you just count distances and relays they have more events than the cyclists, then multiply by 4 strokes!