The scientists are not "upset" about the inaccuracies of this. If they truly thought that the Big Bang has a lot of problems, why would they not call it the Big Bang Hypothesis? Scientists don't propose this as a "possibility that may have occured", they speak of it as a fact where only tiny details need to be worked out.
There is a difference though. From what we know of the big bang, there is a starting point of the universe. The universe being started from nothing violates physical laws. A spiritual entity wouldn't be bound by the same physical logistics. Even if someone argues that it is "unlikely" for God to exist, it is still atleast a logical possibility.
Scientists call it the Big Bang Theory. And in Science, the word "theory" is supposed to basically be the equivalent of a proven phenomenon. Scientists do not admit that the Big Bang theory is broken. They really believe that everything in the universe came from nothing even though it violates everything in cause-and-effect.
The people on HN think that the world revolves around start-ups and Paul Graham's philosophies. It doesn't. There are a lot more ways of making money in this world.