This is about that OTAKU film. First of all, about "moe", he describes it very well with his excellent imagination! Actually, I also do not know well about the definitions of the technical otaku terms. but as far as I am concerned, "Tundere" is the feeling of something like ambivalence, in which aspect I think he is right,but I also think that it is too extreme to define Tundere as saying "DIE " on one hand and " I LIKE YOU" on the other hand. An example best fit for "Tundere" is, as far as I am concerened, Asuka Langrey's attitude against Shinji Ikari, from Neon Genius Evangelion.
As for all other, I think they are right.