I don’t think there were “so many” reports to the contrary, there were just a bunch of reports citing this one NBC report. One mistake gets spread and amplified quickly.
I think what happened is the police never said that the Bushmaster was in the trunk, they said they recovered a “long gun” from the trunk, NBC was aware that a Bushmaster was recovered, but hand’t heard about the shotgun, and they autmatically assumed the Bushmaster was the “Long Gun.”
While I believe you’re right, there has been too much secrecy of autopsy reports and misinformation that was never set right by the media. Lack of clarity has no rhyme or reason, but has been very helpful to domestic enemies, who have been singularly advantaged by the break down of both the truth and un-timeliness in the reporting.
The media is purposely and personally shaping stories that serve the enemies of the Constitution.
The authorities should have known and observed that the rumor mill was being fed false information and should have made the facts and clarifications known by releasing both investigative and medical reports.