No, people don't want to use it because it's a stigmatized word used to refer to essentially all of WoW's endgame, complicated or not, it's bland it's boring it's dull. It's a little bit of WoW bashing, and a little bit of "oh no that's wrong."

How can you seriously consider a 4-8 person dungeon a 'raid' anyway? It's more like an exploration.

But don't go putting words in our mouths, you're free to your opinion as I am to mine, and to use the word 'raid' to potentially label all group related content from dungeons to missions from here on out would be a travesty and just plain retarded.