Of course, it's an incomplete project, you never know where your money will go or if the game will ever be completed, that's always a risk. However, I only said there's an expectation, which is clearly stated on their Patreon that the money is being used to help the project.
I actually have no idea how development is going, if it was always this slow, I don't follow it, I am merely criticizing the idea that it's okay for them to be as slow as always after setting expectations that development would get more focus with more money.