A zipper merge is only applicable to a lane that is ending or has an obligation to merge. In exit lane jumping, the car is coming from a lane that does not end and has no obligation to merge. In fact, at their point of entry, you will notice a solid white separating the two lanes, indicating you cannot even legally merge.

There's a difference between zipper merging on a lane closure (which is what the article described) and what the person you are responding to described.

You are not supposed to block your lane of traffic because you didn't want to wait like everyone else.