> There are currently 13'797 Tor exit nodes <https://www.dan.me.uk/tornodes>

As far as I'm aware, this is off by a magnitude, and I'm not sure where the number comes from because the linked website lists much fewer (but ratelimits to 1/30m for some reason?). The official list at https://check.torproject.org/torbulkexitlist lists just over 1k exits, so I really doubt these made much of a difference.

Public exit nodes are a subset of exit nodes

Could you explain? I thought all nodes except bridges were public.