For Harry Potter Nerds! Doesn't it irritate you when ppl use the term priori incantatem incorrectly?!?

So Priori Incantatem "the reverse spell affect" is described as when two brother-core wands are forced to duel. But what really gets me is how ppl who have seen the movies think whenever there is a duel this affect is taking place. First of all, when two spells collide a golden-lava energy is emitted(as portrayed in the films) but what separates an average duel from a PI scene is the globe of light engaging the duelers... anyways this always has bothered me. Especially when I read ppls response about the new DH teailer. They're like "whoa did you see that priori Incantatem scene in the final showdown between Harry and Vold?" That's just absurd! Harry had Draco's wand and Voldemort the elder wand... also in OotP the Dumbledore/Voldemort duel ppl confuse the real meaning of PI with their epic duel. So yeah correct me if I'm mistaken I just want to hear other ppls opinions on this subject because I believe PI is something more than just powerful magic clashing simultaneous from both ends.