Normtards have "house slave" mentality. They think of themselves as the smiling, well-dressed house negro, ready to serve the SJWs, who they regard as the massa. The "transphobes" are the slaves out working the fields, and the normtards/house slaves are constantly on their knees blowing the SJW massa in a desperate effort to differentiate themselves from "dem inferior field niggaz."
Deep down inside, normtards know they are slaves too, that they are just cogs in the rich privileged SJW-run machine, really no different from those workin' class rubes except for having a few more shiny material trinkets. And that fact scares the shit out of them, so it's no wonder they're in such fanatical denial.