What's with these later millennials hatred for older millennials

Here recently I've noticed this strange unnatural hatred from a few users over at generationoligy subreddit who are late millennial(particularly 92 to 94 borns) who constantly keep trying to dissociate from 80s millennials, bashing us because we're in our late 30s and early 40s, which I'm thinking that is why some of them are doing it. They don't want to be associated with anyone over 35 because they're in their early 30s now, and they don't want to feel "old." Lol. It's mind-blowing. I don't see any of this in real life or even on here. It's like a small few who have this issue. Lol