He wasn't registered to vote for either party so how is he a Democrat? Somebody isn't a Democrat just because you don't like them and they aren't even a Democrat just because they are liberal.
conservatives were already pointing the finger at transgender people after the shooting, even singling out one transgender person by name and saying they were the shooter, then it turns out they had nothing at all to do with what happened. In recent years, there have been many instances of conservatives blaming a transgender person for everything from mass shootings to plane crashes, when no transgender people were involved at all.