Meanings of much blather in inglés

There is an impulse to dismiss political rhetoric as just so much blather, harmless blather.

Promises to burn bondholders and protect voters from austerity measures had proved to be so much blather when the Troika applied pressure.

There is one aspect of Heisenberg's theory that has generated way too much blather and misinformation to be ignored-thatis, the famed uncertainty principle.