I know I have talked about George RR Martin before, and I know I shouldn't be surprised but I thought he would know better than to say what he did. He was posting about the different projects he is working on, and of course they are all projects that are Ice and Fire spinoffs/take place in Westeros and he said he is sad to see that some people only care about Winds of Winter when there is so much Westeros content being put out.
I honestly was thinking how he could be so dense and honestly why should I give any time or money on side projects when he doesn't seem to care about finishing the main story. I remember a co-worker of mine was shocked when I told her I didn't plan on watching House of the Dragon, but honestly why should I?
Just a little nerd rant.
The bottom line is that he doesn't want to finish Winds of Winter, and he feels like he doesn't have to. He's just too much of a pussy to come out and say it.
My guess is that he doesn't know how to finish it, and is afraid to try.