If anything, this means that, theoretically, GTA Online didn't kill Rockstar, as they are working in Red Dead Redemption II and "future projects". I say theoretically because anything could change or go wrong in the meantime.
With both GTA IV and Red Dead Redemption, we sold DLC and unfortunately both times, it fractured the audience and helped to kill the games much faster than they deserved.
I don't really agree with this. Both games had a pretty huge community before GTA V. The only thing EFLC did was split the community in Multiplayer, as people with only IV couldn't play with people with EFLC. Still, I could easily find lobbies in GTA IV, with all gamemodes, not to count the people doing events.
With GTA Online, if there’s content people don’t like or want, they can simply ignore it and do something else, while still being in the same core world as everyone else.
I don't like the Hydra, or the lock-on missiles. Will this prevent me from being killed by them?
One of the enjoyable things about working on a project like this is that you can iterate quickly, and change and evolve plans fairly quickly too, so we don’t have to be as clear in our plans as with other projects.
So, you like Online because you can copy-paste stuff with minor changes and minimal effort and release it as new with noone knowing? Yeah, sounds like GTA Online.