I think the influence on Reddit was deeper than a lot of people have considered. The hivemind was so strong it made it difficult to have decent and useful discussion, even the puns that muddied down nearly every post's comments achieved that end. The amount of posts I've seen of people feeling much more comfortable actually interacting on Lemmy, in my mind, lends weight to how Reddit wasn't a place for objective dialogue. That's why it felt so adolescent, like sitting at a high school lunch table.