In a previous post made approximately forever ago, I tackled the idea of “churn”; that anime fandom was constantly gaining new fans and losing old ones, at a rate high enough to cause significant institutional memory loss. Long story short, it turned out there was a distinct, cliff-like loss of popularity corresponding pretty closely with the introduction of Blu-Ray to the market in 2007-08, but not a constant one over time.
Here’s another angle on the idea, though: there may not be a constant change in popularity, but what about rating? Are people giving newer anime higher scores in general? That’s what I’m going to examine here.