Is balancing between the good and the bad when judging individuals a correct approach, or is it necessary to only mention the bad deeds and warn against the person claiming them?

Whosoever shows evil or bidʻah (i.e., innovation within religion) should be warned against, and his good deeds should not be looked at. His good deeds are between him and his Lord. Whosoever manifests evil or bidʻah (i.e., innovation within religion) should be warned against, and he should be advised so that he follows guidance. This is the Sunnah. Yes