It is a bit of a pain (though, I actually think it is acceptable in conversation to simplify it to episode 4), but overall it is worth calling it by its original name of Star Wars to show we are not ignorant of the true history of the film; much like it is easier to say “Han shot first” when it is really “Han shot Greedo… period”, and both are confusions brought to us by Lucas’ endless tinkering… Case in point, I guess.
With me, I mostly call it Star Wars out of pretentiousness 😃
I do agree with avoiding the use of “Han shot first” for the sake of accuracy, but it is something of a cultural rallying cry, so I can accept that.