I think one of the recent site updates has made it harder for people to find smaller comics(?) and it seems to be a general problem for everyone.
My own stats over there have been pretty steady, though I have noticed some slowness in new subs coming in (rather than a ton of them appearing when I JUST update, they sort of trickle in slowly throughout the week). Views, likes and comments have overall stayed pretty consistent for me. Some updates do better than others, but I've never had any huge drops.
My own guess is that they're focusing on promoting the top 30 comics of every genre. But with the secondary genre option, popular comics are overlapping and taking up space in other categories, which pushes smaller ones even further down the list. Not sure if this is a good or bad thing, but in my own browsing experience, I'm getting used to seeing the same things repeatedly in the Discover section and very little of anything new.