Intentionally not communicating things in order to prevent bikeshedding is a dangerous game to play and a symptom of a broken environment, but that doesn't mean it's not sometimes a valid approach.
Agree - and it 100% comes from broken teams/environments/people. In engineering, I find most teams are more invested in tearing each other down more-so than building each other up - that's admittedly very anecdotal and personal to me.