The weekly trend reflects a 15% drop over the same period. The data comes from nostr.band and active pubkeys are those considered to have a non-zero trust rank which is influenced by nip05 settings from select providers and weights based on those pubkeys events and being mentioned in events.
That's gonna be a mix of people not preferring the platform over alternatives and people preferring to not do any social media for a while. I think those who give up on nostr are simply sorting themselves out. It's a free market for social media. Let them come to us when they are ready. Perhaps onboarding and key management can be made easier in the meantime. I understand Primal is pretty easy.