Yes, I've been seeing that as well. And am not worried, in fact I'm buying at this support level around 22.30.
I think people were a bit overhyped on Destiny before it came out so there is some disappointment, but that'll fade. The game is pretty effing amazing! I bet it gets people hooked, and there is an incredible amount of people playing it and only a tiny fraction are not happy.
Most importantly there are other other sources of revenue, and serious ones at that. Like the new Call of Duty or Hearthstone that's becoming a longterm success.