It's OK to criticize, but don't be/get 'self-righteous' about it.
a 'self-righteous' person/tone
(..) Our mother was dead, our father was practically catatonic. - A grandmother might have come in handy. - She was impossible, Rose. Bossy, self-righteous, nosy about things that weren't her business. - Like what? - Trust me. We were better off without her. Because she was bossy? (..)2005 In Her Shoes