I checked Google. The first result is the Blizzard Gear Store but that specific shirt isn’t there. I wonder if they pulled it off?
Like it’s entirely possible they were transphobic about it, but it could also be a design aspect. I looked on Twitter and multiple people said they were supportive of trans people (and this is coming from ex-trans employees). So I dunno. I’m hoping it’s a redesign because this was just a dumb oversight.