It's not a fringe issue.
If you are voting for a party who thinks it is fine and just to subordinate ANY group, never mind half the human race, on the basis of a particular characteristic, while lying about it, and who believe that personal realities and alternative facts matter over truth? Who do not believe in democracy and equality, but primacy of their particular (current, fashionable) pets? And are setting out to create division and anger and conflict between groups in society?
You are voting for a party that is going nowhere good fast and is fundamentally fucked up.
The truly stupid following this ideology seem to have forgotten the long history of 'it's fine to subordinate and dehumanise THEM so long as you're nice to my mates'. They would tell you they spit upon the memory of slavery, while embracing the exact same attitude, that there are characteristics that make some better and worthier and more deserving of rights and other characteristics that make it ok to remove rights and subordinate and treat as lesser. They don't even realise they are creating a society in which they have nothing more than hope that they don't come to be one of the targeted, unfashionable groups.
The left are in all forms now unethical and immoral in ways that are heading somewhere far, far uglier and more harmful than mere drunken lies and parties and incompetence and debauchery.