“Gender identity and gender pronouns are mental constructs that I don't partake in”
Sounds like your problem, not mine or anybody else.
“ only acknowledge sex and sex pronouns.”
The fuck does that mean, you actually apologize and retract your shit behaviour is you see a birth cert?
“Calling someone anything other than their sex pronouns causes me extreme cognitive dissonance and damages my mental health.”
Then the onus of the responsibility to NEVER communicate with anyone whose pronouns you are unsure of or cannot accept is sorely on YOU. Your boundaries, real or made up cannot cross over and eat up those of others. Being on the spectrum I’ve several things to how my brains work, that I may need to specify or ask an extra accommodation for. To do that, is entirely on me, however, my issues typically do not overlap with others boundaries and rights, so this is a different example. In your case, your trigger very much overlaps, so the only way for you to not cause the other people some extreme mental damage(and if you don’t care about causing it to others, then why should we care about causing it to you?) is to forgo all interaction with any individuals whose identification would cause you distress, in short, never talk to a transperson in your life again and if you will, you will be considered the aggressive, violent party. The End.