It's a nice touch on Blizz's behalf, but I wouldn't jump immediately to trans. It could be trans, but we don't know.
Honestly if I could shapeshift myself I would definitely check out what it is like to have <censored>, after all the time I dedicate watching it online xD
And I am pretty 100% sure I'm not trans, though Chromie's motivation does seem different and less driven by curiosity