Yes, we know the shooter was male. I'm not contesting that.
If the immediate report was from a witness of a "female in a dress" then that's what they're going to say was reported in the initial calls. Because that's what WAS reported in the initial calls.
It wasn't correct information - I agree. But it doesn't mean there's some conspiracy to hide the shooters identity. Even if there was it was a shit conspiracy because 24 hours after the shooting we had the facts. And yet some people are so fucking impatient they just have to have all the details immediately.
The police have to be careful with what they say until the facts are established and everyone spoken to. You only have to look at recent cases like Charlie Kirk. They've arrested two people / one was let go / they've got the gunman / no they haven't / ok now they've got the real gunman. And this is far from the only case.
I don't think people appreciate the difficulty and sheer horror of these situations that the police are dealing with. Their priority is not confirming whether the shooter was trans (or whatever other category is in question) just to satisfy public interest.