Good footspeed in moving events is generated by short, choppy steps. a long stride is not ideal.
Also, clearly hand size is the reason being a larger human makes grip events easier.
As for pressing and deadlifts: Many of the strongest deadlifters, in fact most, in the world are over 6’0 tall. Being tall is not a disadvantage there. And the extra muscle that larger humans can carry on their body seems to outweigh the mechanical disadvantage (longer limbs) they have in pressing events.
Of course you are. You’ve never cleaned and pressed a heavy axle. The axle does not rotate via collars, the axle does not flex like an oly bar does. Oh, and it’s 2 fucking inches thick. lol. try holding that during a heavy clean.
Most of the best pressers, but not all, in the world push press. But the jerk is still used by some. Both methods are effective. In lower weight classes, many of the top guys jerk both the log and the axle. It’s technically very difficult, especially the log, but lighter lifters generally have the mobility that the biggest guys in the world lack. If you want to see something really impressive, watch the log press showdown from like '12 between Koklayaev and Big Z. Koklayaev split jerks like a 460 lbs log.