> Communication matters most when you're dealing with cross-org concerns and those that master it are usually the more friendly and pleasant ones.

I don't agree with the second one, but agree with the first.

Throughout my corporate career so far, I have found plenty of hot air/pretty picture slide decks that exist solely for ladder climbers to climb. Said ladder climbers are usually all smiles in public and "friendly", but you have to watch out for knives behind your back.