It seems that I see this type of posting every year around this time.
I agree that the summer weather (in the Northern Hemisphere) is probably the major culprit. Good chunk of the posters are from this part of the world.
And things have been quite civil around here lately - not trolling or flame wars. Unlike on rec.models.railroad.
I rather have quiet than the crap we had to put up with around the US election time.
I also don't buy the notion that modelers are dying off or dropping out of hobby. While there are less and less of young modelers, there is still plenty of plastic kit builders around.
But some of us might have moved on to moderated forums.
I wouldn't worry too much - things go in cycles and r.m.s. will get more active again.
Peteski