right. it's not much different from the American confusion over their failure to defeat the Viet Minh over 100 years later.
as you say, large blocks of men standing in formation would shoot each other. the guns were so wildly inaccurate; they took a long time to load and left people vulnerable when doing so. the blocks of formation allowed people to sustain fire when modern rifles were not available. these tactics only look silly when you transpose modern mechanics on to historical scenarios. first line opens fire, then kneels down to reload while a second line behind them opens fire. when the second line starts reloading a third line opens fire, and the whole thing starts over again.
pretty sure this comes from a Bill Cosby stand-up routine as well. it's funny, sure. but it's not history. (he also saw fit to use this same comparison to Custer vs the Indians.)