It's not really slow growth though—it's actual shrinkage. Since the New Year down by about 12% or so. Also those dropping off are likely to be genuine users and not the suspect portion of the daily "trusted" pub keys. So maybe 20-30% shrinkage in actuality, who can say. These things go up and down, but it's been years at this general level already, and I have a feeling the next 12 months or so will determine how robust Nostr really is.

I think growth is really really slow. The development is still new and under invested. 

BlokchainB

nostr

Poll: Do Stacker News users like nostr?

TheWildHustle

Also it's losing users and you can feel it. Each time you come back it's more and more down to the hardcores. 

At this stage Nostr should be at least gaining a modest number of users each month, definitely not losing users. 