You didn’t read the article did you? Its not about the inclusion of a character, but about how a specific scene with that character is handled. The author claims it is completely jarring, doesn’t fit into the games setting and doesn’t even use the games existing lore for transgender people but instead uses modern terminology.
I found the article to very informative and not at all “gamergatey”.
Its points are:
- this is the scene
- it is bad
- here is exelent trans representation in a fantasy setting
- “its a BioWare self insert”
- this is how they could have handled it better
- the game is great, but now everybody will just talk about woke, so again the game is good
“Evolutionary reason” does not necessarily mean that a feature is an advantage. Mutations are random and then positive or negative selective pressure act on them untill the mutation is either extinct or is adopted by the whole population. For features without selective pressure the same thing still happens it just takes longer and is basically random. So different populations of a species will always develop different features even when given the same environment.
So for most of the features you listed: yeah it just happened.