I can totally get creating a character with an interesting backstory and complex motivations; edgy, tragic, romantic, familial etc. I like to do so myself, and, as a DM, I like it too; gives some nice hooks to add to the campaign.
But I simply cannot see why anyone would create a character that they know is likely to disrupt the game, and even make the party completely dysfunctional. Why would you do this? What is the point? It may well be “what my character would do”, but why would anyone make such a character in the first place.
I have experienced this type of thing in 40+ years of gaming and it has never been a good experience for DM or players.