I've have theories involving the tracha matrix room and/or seasonal depression, but there's no guarantee that's the cause. The activity could always quickly rise like it did last summer, that's around when I first joined and started posting on the mega, but new users joining wouldn't explain the reduction in activity. Megas now tend not to go higher than the megas before pride month, which also could have been a cause of increased activity, but even then, things just feel slower now.
Going back and looking at older trans megas feels strangely nostalgic, and it makes me realize just how many people have come and gone. Granted, many could very well be on alt accounts, but seeing (-57) comments on a thread also gives me some sense of dread. Really hammers home just how fleeting this all could be, and how much things can change in a matter of months. I just hope everyone from back then is alright.