It begs the question as to whether the author of the title actually believes the Big Bang is confirmed from a scientific point of view. That would suggest an atheistic belief.
The job of people who write titles like this is to be very pedantic about word choice. I’ll have to disagree with you on this being a “plain wrong” interpretation of the given wording.
It's not the job of the people who write titles to be pedantic although it is reasonable of them to expect most readers to know the difference between confirmation and absolute proof. The problem here is not with the title.
