I personally think if the movie is delayed we won't know the reason as to why until after.
The Chandler story seems weird, hypothetically if it were true, the whole production team and Lionsgate when informed about this immediately started rewriting and re did everything, that would mean the October push was true, if there is another delay it wouldn't make sense since they already were solving it and now another thing has happened and they need to delay??? or they underestimated the time they needed to reshoot/re-do everything.
There are so many different reasons as to why it has been delayed that I am not surprised if it turns out to be a whole different reason we don't know about
With all the people coping and being overly optimistic, and also the pessimists who are negative, I vow we all just wait for Lionsgate to tell us what the **** is going on