Why would they need more funding? They've been fully funded for almost two years now, I believe.
It's not about needing "more funding." They were a month from launch. I'd happily pay to get "early access" to the title given this delay to play it sooner than the newer date, especially since... again... it was one month from launch.
I don't know for this specific case since I'm not "in the know" but I can tell you from experience that generally speaking the decision to actually delay the game is often taken long before it is announced publicly.
For example, in this case, I wouldn't be surprised that they decided to delay it back in july/august but waited until now to announce it.
It's not like you wake up one morning, a month from release, and realize that your game isn't ready to ship lol. You see those things coming when you are developping a game.
I realize that. But again: Weird how they announce a delay with like 2 weeks left from launch. Surely they could've announced that delay when they realized they were going to have to delay it.