It happens somewhere between ten and eleven digits of karma :)

Relevantish short film:

https://www.youtube.com/watch?v=Ae2ghhGkY-s

Not surprising last reference I know of it is years old and PG is busy doing other things now.

Is there a similar list to /leaders but with "active" accounts ranked by age?

/leaders already gets stripped of inactive users by some mechanism that I have not yet figured out.

Maybe it's just growth? The more active users HN has, the more votes a popular comment will get. So active commenters, even if they stay in the same relative ranking, accrue karma faster and faster. The corollary being, if you stop commenting, you lose your position in the ranking with speed proportional to time since your last comment.

No, there are people who "should" be there who aren't. For example, 'pg with 156k karma.

I see... but in any case, those are still sorted by karma rather than by age. I'm just wondering who are the oldest users that are still active ~daily