Downloads and metrics are a shitcoin. This could be a severe drop in spam accounts for instance (not saying it is, but the data would look this way if there was a sharp dropoff in spam)
I'd be interested to see zap volume/frequency, that to me is the signal. Active pubkeys is noise. Like trying to get more downloads for a podcast or more followers for a Twitter account, it's a far less meaningful fiat number to chase.