The fear is always a misunderstanding of what’s going on with the top guy.
In this case, some of the British coaches wanted to emulate Bolt’s stride length as the “answer”, thinking Williamson should go to 41 strides when he’s much shorter than Bolt. That just will never work out well and the farther into the race you go, the worse it will get, hence better 60m than 100m results for W.
The best bet generally is the use a program that works on all aspects without predetermination and let things sort themselves out for the individual, as PJ says.