Regarding the lone Viking warrior single-handedly holding off the Anglo-Saxons on Stamford Bridge in 1066…what is the prevailing academic view on the veracity of this story?

/u/wotan_weevil and /u/sagathain approached the alleged episode mainly from literary-focused points of view in: The Berserker at Stamford Bridge
I also wrote on the extant source situation of the episode for a while before in: Was there ever a name given to the Viking that held Stamford Bridge in 1066?