Earlier quoted context omitted.
I don't know if this is a good metric because Reddit five years ago had 4x as many active users than 9 years ago. It would probably be an interesting exercise to download the data for all the AMAs and adjust by MAU to see what the actual most popular threads were, but I'm not going to do that right now.
> I don't know if this is a good metric because Reddit five years ago had 4x as many active users than 9 years ago. It does today, yet most of the top upvoted ones aren't from the last few years. Rather, most seem to be from 2 to 3 years after Victoria was fired. So they seemed to get more popular in the first few years after she was fired, and then less after that. I'm not sure that can simplistically be chalked up…
The subreddit was a default subreddit for a while, and no longer is. So for some years, every new Reddit user was automatically subscribed to it, and that stopped being the case.
Everything you're saying actually corroborates OP's claim.