> Bullshit, you typed out the name, so I know you definitely read it.

You can cut and past the name from the header of a post without reading it, and without typing it out.

> And yeah, defaulting to 'his' is exactly sexist (it's a rather mild form of it, but still).

Adherence to the English convention of using the masculine grammatical gender for subjects of unknown sex/gender identity might bother some readers, but is only "sexist" by an understanding of sexism that trivializes the term and robs it of substantial meaning.