Two things communists (especially Maoists) specialize in:

1. Prppaganda/Speeches/Rhetoric

2. Killing/Murder/extermination of any opposition

No wonder you were impressed by his speech. If he was able to brainwash thousands of parents, children, families and neighbors to kill each other, what wonder is there in his impressing smug people in a safe room with talks of utopian dreams, to an audience that still believes in dreams and manifest destiny and the white man's burden etc. As for Nepalis being impressed (either willingly or under compulsion), when were they not?