He has finally hinted to knowing what the LN is. Took him long enough. I think he knows how big crypto Twitter is and wants to appear blockchain agnostic. Like a member of a boyband who has to pretend to be single.
Being a Bitcoiner is still pretty politically charged, and talking about Doge can be played off as a joke. But it might be intentional. Out of all the altcoins, Doge is not a security, so he can't get in trouble or accused of being paid off by anyone. I think he's coming around slowly. Gronking Bitcoin is hard for people with egos.