Nobody is on the side of the house elves because Hermione is the pet leftist. Ever watch Downton Abbey? Pretty good show tbh, but if you have, then Tom Felton is the Downton Abbey Hermione. Why is Downton Abbey, of all things, relevant? Because it’s conservative apologia for the way things were, just as HP is conservative apologia; these types of media will often include a zany leftist that they can soften and win over to show how their conservative agenda is good actually. Think about it, HP isn’t left vs right, it’s old conservatism (Dumbledore and his muggle-loving ways) vs batshit insane ultra conservatism (the Death Eaters). If you swap wizarding blood for noble blood, being a wizard for being a noble, etc. it works almost perfectly. Hermione is new nobility that the old nobility doesn’t respect; Harry is from a good pedigree, but was raised by his peasant aunt and uncle and doesn’t know how to act the part, etc etc. The left (Hermione) wasn’t supposed to win (and didn’t), that W was meant for the old conservatives all along.

HP and Rowling have always been conservative, it was just that we misread the struggle being portrayed there.