I can't disagree with the final statements
It goes back to the different time, modern-day lenses thing.
The letters to Hitler, for me, just personified Gandhi's calmer approach which is wildly different to Hitler's. Gandhi wanted universal peace (ever the optimist!). I think he wrote in the letter that despite calling him 'Dear Friend...' he said it because he has no foes, not because it was as a legit friend. I don't know if this is a fair comparison but it's like the Dalai Lama these days - also striving for world peace so you probably won't ever see him get in some heated argument regardless who he speaks to and regardless if that person is 100% cunt material. It's like a 'don't stoop to their level' trait.