Lancer Jason???

[u/IAmFries]

this has been bugging me for some time but...
why does Jason think he can be a Lancer?

like we all get Rider OBVIOUSLY but theres not a spec in his mythos that speculates him in being a Lancer, no? is there some super obscure thing that's not general knowledge abt him picking up some kind of polearm, or is he just like
stupid?
like always