FWIW I think the only justices that write their own opinions are Thomas and the new guys. Clerks write the opinions and the justices just sign them. I doubt if RBG has penned her own opinion on any case in the last 10 years. This is nothing new. She has probably been incoherent for years, perhaps decades.
What you have just written saddens me beyond belief. I had no idea. It strikes me as 100% unethical.