What criticism is directed at the person discussing parental guidance?

The selection of the answer indicates that the criticism centers on the idea that the individual discussing parental guidance possesses negative habits that undermine their credibility. This points to a common expectation in discussions about parenting; people often look for consistency between advice given and personal behavior. If a person who is offering guidance on parenting displays habits that are not conducive to good parenting, it raises doubts about the validity of their suggestions.

In this context, the effectiveness of guidance is often seen as contingent upon the credibility of the advisor. Engaging in negative habits while advocating for positive parenting practices can lead to perceptions of hypocrisy or a lack of authenticity. This makes it difficult for others to take the advice seriously, as there is a perceived disconnect between the speaker's actions and their words.

Consulting an individual who has not experienced the challenges of parenting, has limited teaching discipline, or simply provides evidence without personal experience adds different types of criticisms, but they do not directly relate to maintaining credibility through one's actions. Thus, the crux of the evaluation in this case is focused on the impact of personal behavior on the effectiveness of parental guidance.