Its obvious the troubled launch is talking about all the negative feedback (not sales) Destiny has got which will hurt its legs in the long run. People had hyped this game up so much that it was expected to be a masterpiece. I liked the game personally but when it comes to reviews it is Bungie's lowest scoring game even below Halo ODST and well below people's expectations for what the game was going to be.
Destiny week 1 - 4.5m on 4 Platforms
Halo 4 Week 1 - 3.7m on 1 platform
What it does is show that yes SciFi shooters are still very popular and with Destiny being well below expectations, being that some people even wanted to call it a replacement for halo, yeah i would consider that a good thing for halo because it wasnt the same quality of halo. This is shown in story, multiplayer, and content.
Even then i do like Destiny, in fact id mark it as one of my favorite games this gen and have put well over 50 hours in it and still play it a lot. But it isnt hard to see what is being said.