Using 'moralistic' can imply disapproval of being overly judgmental. People avoided him for his moralistic views which often felt patronizing.
Pro Tip 2/3
Not Always Righteous
'Moralistic' sometimes means imposing beliefs without considering others' perspectives. Her moralistic attitude alienated those with different life experiences.
Pro Tip 3/3
Subtle Disapproval
Using 'moralistic' suggests a subtle critique of someone's self-righteous behavior. His moralistic tone was off-putting during the discussion.