Less transphobia and general lack of social consciousness. I'm often on the edge of not reading HN as it is for those reasons, but unfortunately there isn't anything else like its better sides.
HNs isn’t Twitter, and one of its strengths is being intellectually open and discursive.
What you see as ‘the obviously true thing everyone should accept, positively affirm, and shun dissenters of’ may not be that. At the very least, none of us should expect HNs to be tailored to our particular set of ideological values, no matter how deeply held - imo.