Ok, thanks.

I also don't see any reason to go from "the FAI doesn't care about identity* to "I shouldn't think identity exists."

I don't either, now that I think about it. What motivated me to make this post is that I realized that I had been making that leap, thanks to applying the heuristic. We both agree the heuristic is bad.

Why are we talking about a bad heuristic? Well, my past self would have benefited from reading this post, so perhaps other people would as well. Also, I wanted to explore the space of applications of this heuristic, to see if I had been unconsciously applying it in other cases without realizing it. Talking with you has helped me with that.