I’m convinced duolingo intentionally sorts people into nice diamond and hell diamond because I see people post “diamond is crazy, I see people hitting 2000 xp” and meanwhile in hell diamond, first place has 21k xp and there are multiple people with 4k xp beneath the threshold
And no, I don’t think it has much to do with the time of day theory; I’m in hell diamond almost every week regardless of what time of day I join. When I’m not in hell diamond it’s weirdly quiet compared to what I’m used to