You mean the people who were savagely destroyed, lose their free will, and had the same genocidal maniac also tear down their kingdom?
Yes, the Quel’Dorei would not have anything in common with them… none at all.
Especially when their Ranger General fought and found how to get their free will back. Nope, it makes no sense at all why they would side with the Forsaken.
you blame sw humans, who werent there, for what lordaeron humans did to belfs. then you join the lordaeron humans once they are scourged, because syl managed to break their programming, but the programming being removed restores their minds to the original state they were in when garithos tried to kill off belfs. oh and this is the fault of people who either werent there or hadnt been part of the kirin tor nor lordaeron.