Yes, it's important to be accurate.
However, there are a whole host of reasons that information that is still emergent may be confusing or incomplete. The initial description released in this case was just the police alert, which would have been based on potentially very incomplete information called in to the police. Initial descriptions from witnesses are often very partial or simply wrong.
And then once the immediate danger was over, you have the police avoiding initially releasing much information at all beyond the description in the alert. Which may have been for entirely legitimate reasons like needing to contact families.
And then, in this case, there is the complication that the information is coming from Canadian authorities, and the laws around transgender identification are fraught. So if second guessing what they are saying, it may take longer to find a trustworthy secondary source.
So I suppose what I would say is that it's not reasonable to expect that the media will have perfect information within the first 24 hours. I think anything within that period is subject to change and revision, especially where it is coming from a remote place.