I've noticed a gradual decrease in participation amongst the top 10-15 or so active contributors here on Photo-SE, in the past ~6 months (roughly since June 2019). Coincident in that timing is the larger Monicagate issue that has affected all of Stack Exchange sites collectively. For Photo-SE in particular, we have (had) one active moderator and two semi- or slightly less-than-active moderators. Our active moderator is one of the signatories of the Reinstate Monica open letter, and presumably as a result has substantially reduced their activity to only addressing site-critical issues.
As an example, I have noticed that the flag moderation queue has been left alone since around mid-October.
As I mentioned, coincident with the Monicagate reduction in moderation activity has been a reduction in participation from the site's most active contributors. I consider myself amongst this group, and I have also slowed down my own contributions. Not necessarily through any overt intentions of reducing participation, but life circumstances, etc. (a.k.a., "overcome by events").
I am not blaming anybody for lack of, or reduction in, contributions. I support and agree with AJ Henderson's signing onto the Reinstate Monica open letter, and support his actions to reduce his moderation role as a result of SE's actions towards Monica.
But in the larger picture, am I wrong, or have I noticed a larger pattern of the Photo-SE community effectively dying in the last half of 2019?