AITJ walking away from a family group chat after they kept asking me to organize every event

My relatives love gatherings but no one likes to handle the planning. Somehow it became my job to schedule dates handle food lists remind everyone of times and coordinate rides. I did this for years because I enjoy being organized. Lately though it has been exhausting. My family argues constantly about tiny details and then expects me to be the one fixing everything. Last week they started planning a birthday dinner for my cousin. Within minutes the chat turned chaotic with everyone demanding something. They all tagged me repeatedly to settle it. I said I could not plan anything this month because I was overwhelmed with work. They all ignored my message and continued asking me to decide the restaurant.

I left the chat. They called me dramatic and said I ruined the tradition. I just felt fed up with being treated like the default coordinator.