theres two kinds of hating on elves, justified anti-white supremacy, and misogyny. and also those two can coexist in the same person.
just to elaborate
elves are frequently white-coded. they are often written as seeing other "races" as lesser, and use the language of real life racism- 'savage', 'children', etc. the narrative often justifies this by giving them a grand, ancient history, innate talents, art, culture, etc that other peoples are shown to lack or simply have less of or are "inferior". they are also usually visually coded with features common to peoples of northern europe; pale skin, long bony faces, downward pointing noses, blonde hair, tall, etc.
thus, some people you find hating on elves are expressing hatred towards white supremacy and a rejection of the idea that there is an Objectively Better race. i think those people are correct in their values and justified in expressing that in a jokey way that engages with the modern fantasy genre.
on the other hand, elves are almost always also coded as feminine. they are naturalists as opposed to industrialists, artisans and intellectuals as opposed to laborers. they are thin, with long head hair and no facial hair. they are emotional, capricious, and impractical. you will often, historically and in modern conservative spaces, straight up see transmisogynistic slurs like "sissy" levied at elves. this almost always goes hand in hand with contrast to dwarves, who are codified as hairy muscular industrialist practical laborers. you even see this in elven wine vs dwarven beer.
i deeply resent when elves are used this way and have a kneejerk reaction whenever i see someone larping as a dwarf who hates elves.
this also touches on the way in which misogyny is used as a shorthand for the bourgeoise! the rugged manly rural farmer in jeans vs the sissy foppish intellectual sex pervert! the way many transmisogynists imagine all trans women as privileged white rich intellectuals that they can Punch Up!
so like. anyway yeah go out and larp as an elf hater as someone conscious of the imagery and language youre using and think VERY CAREFULLY about why you hate elitist intellectual tree hugging sissy faggot elves.
