i wouldn't trust such sharp drops at the end of charts.

might just be an "implementation error" where the data is not refreshed. always check next day again to make sure.

also, might just be because of upcoming christmas (buying gifts and other preparations) that people are less active on nostr because they are more stressed out now just to be less stressed out later, lol

so for me, this looks like an outlier (if it's even "real data") and not like a trend.