Don’t you think the official story should/could be changed as they learn more?
Sure, but your statement points to the utter irrationality of how govt and media have been conducting this case:
(1) do NOT assert and act upon what could not possibly be known so quickly, the claim that there was no larger cell or plot or network than the two brothers,
and in particular,
(2) do not Mirandize the perp and stop him from talking early on, when (reportedly) the FBI was having useful questioning with him.
A lot of people, even those who should know better here at FR, conflated the issue of “Miranda rights” regarding protections against self-incrimination in civilian courts with the quite separate pursuit of counter-terrorism info.
He should be treated as an enemy combatant, but even if we are forced by the dictatorship of lawyers to allow him into a civilian criminal context, the “public safety” exception should have been used to the max. and not thrown away so early.
People confuse the protection against self-incrimination (Miranda) with the quite separate issue of gathering info for counter-terrorism operations against OTHER potential perps (not this one who has to be Mirandized at some point if he is to be prosecuted in civilian courts).