I love how we have reached a place where how defensible this is comes down to how minimal the narrative improvements are.
FFXV very clearly is a flawed game, and a good amount of that is concentrated in the narrative. A huge amount of the negative feedback has revolved around that, both from people who like the game and from people who don't. The timing of this fury is strange; why wait until SE tries to fix some of the problems to broadcast your anger at getting an "incomplete" game?
I feel a lot of this comes down to an underlying sentiment that, suddenly, you don't feel comfortable about putting time into the game. But, in general, substantial post-launch support is something we desire to see from developers, no? FFXV's flaws aren't our fault, but I do think we can do a much better job between balancing our desire for post-launch support and our desire to enjoy what's immediately in front of us.
In FFXV's unique case, you may make the calculation that 1). the flaws that might potentially be improved are bad enough for you that absolutely you want to wait, or 2). you're enjoying the game or think you'll get enough from it that the experience in front of you is worthwhile enough. Both are valid. The part that feels off to me is the part where we act like adding cutscenes in response to negative feedback is some uniquely barbarous use of modern digital delivery systems.