It's already been mentioned that responses were very high (18k+ if I remember correctly) on the German servers, so the 2567 is not a complete picture. I have no idea how many players are on these servers - so yes, the number seems low but many players don't choose to participate (and/or don't read the news page and/or don't read the forums). So they don't get a voice.
As far as the poll being 'irrelevant', I can think of a couple possibilities:
1) They had the code ready for changing to event resources for some time, but were not going to implement it unless the vote went that way.
2) They had already planned this for Easter, but the poll was for all events going forward - not just this one.