By definition there can only be one GOAT and as such would have to be career undefeated. Thus no idea what a GOAT of GOATs would be much less the "GOATest GOAT of All GOATs."
When I see threads like this from Wkn I assume he's had another skill saw incident or discovered a new Best of the Best bourbon and failed to share said information with his internet buddies!
Whether the keyboard issue was due to the bourbon or the additional missing digit, I'm sure he meant to type: The BESTest BEST of All BESTs.