I also haven't quite left yet, but I've been feeling for a long time that the quality of reddit is going down. I've been heavily using reddit since around 2011, and maybe this is just my rose colored nostalgia glasses, but I felt like pre-2016 and the T_D era, I was much more engaged in interesting conversation on various topics, and nowadays I mainly just mindlessly surf r/all looking at memes and what not, and only very rarely find those really interesting in-depth threads that I feel like used to be more common. Additionally, it feels like reddit is growing increasingly more corporate, I remember when you would often see r/hailcorporate links under anything that even vaguely hinted at astroturfed advertising, and now you see not so subtle ads disguised as posts everywhere (and I don't mean the ones coming from reddit). I'm hoping that I can find that old reddit feel here, and I'm currently really enjoying the excitement of discovering something new, even the apprehension of navigating a platform I don't fully understand. I don't want to sound elitist, but I'm hoping the barrier to entry prevents Lemmy from growing too quickly and becoming like reddit all over again, but not so much that this exodus dies like others have in the past.
Reddit is going to become the new Facebook. All the people that are sick of their shit will leave and the rest will stay there and rot with the platform. I don't particularly want those who would stay there anyway.