I don't think that's true. When he announced he was going up against Lynch he went on local news and gave an interview. One of his points was that Lynch was no friend of faggots and trannies and his voting record proved that. The interviewer countered that with the fact that the Lynch of 2017 had evolved and his opinion had changed, and brought forward the fact that Wu had interned with Trent Lott and was a Republican. He said if Wu can make that massive change then surely Lynch could have changed too.
What I got from that exchange was that if the interviewer knew that Brianna had interned with Trent Lott, he damn well knew that he was talking to a crazy tranny. He's just not going to bring that up because outing a tranny against their will isn't acceptable in media in 2017.
With the easy accessibility of KF and ED practically everybody who bothers to search for Brianna Wu on the internet is going to find out what a crazy fucking tranny he is. Every journo bar the most lazy of hacks will be fully aware of it, they just won't be the first to actually bring it up in a "respectable" news source.
Here's the interview:
https://youtube.com/watch?v=rm915ayRQ4I