I have never commented on LW before, so I'm not sure what the policy is on links, but I wrote a whole post explaining my worries about superforecasting. On the off chance that it serves as a useful appendage to this post here's the link:

https://wearenotsaved.com/2020/05/30/my-final-case-against-superforecasting-with-criticisms-considered-objections-noted-and-assumptions-buttressed/