That tweet was not very professional of him, it reminds me of Torvalds flipping the bird to NVIDIA reps at a conference.
But I have no clue what he's talking about when he listed all that stuff as places where there are "critical gaps in Bitcoin's armor". Probably you don't know either (Twitter is screwed and doesn't have a search button for a single user's tweets. Let's hope Elon Musk adds that soon )
At least in the case of scaling, there's already the Settlement Pools design I've been working on recently, so we don't need CTV for that.
with regards to the OP's question about BIP-119 and what people think, I think BIP-119 kind of gets overshadowed a bit by Mr. Rubin and his big personality. he's got his own website where just puts it all out there including his little "Fuck Nazis" side hustle project. I just can't take him seriously. But he is a smart dude.