I understand that we spill wine for the plagues. People died, they went through hardship, and it was not their fault.
But.... immediately after spilling wine for the plagues, we say that R' Yehudah made an acronym for the plagues - Detzach, Adash, Be'Achav - and we traditionally spill for each of those, too.
Why do we spill wine for a set of acronyms?
(Note: I'm looking for an a priori reason, not an interpretation of what that spilling means.)