100% agree on this and it's about following others. Someone will get a new tuner or designer part and win a couple of races and then the sheep follow. There are so many examples of this: tall seats, magura-type levers, expensive clutch plates, front forks, tubeless tyres, ignitions and then engine parts or short stroke engines which someone says gives an additional 1 hp which they then have to deal with as the bike 'spins up' on the track. Then there's rider things like dangling the right leg ("it worked for Zmarzlik so that must be why he's multi world champion") rather than sitting further back or getting a longer seat, dropping the clutch repeatedly on the start line (which makes absolutely no difference to their start) and lots of others.