Did OP just discover that US soldiers don't goosestep and that 97% don't give a shit about drill theatrics outside of when they're boots?
The type of people to really invest in having quality marching in the US are almost exclusively honor guard. But even still, US marching style is too casual to look good if you think good marching = goosestepping in complete sync. Most of the stuff you do in the military is *not* marching, there's no incentive to make it look ultra pristine when we don't do parades often, we don't force drill all the time, and it doesn't really accomplish anything other than looking a bit cool (which is again, the point of flag and honor guard positions)