I work as a social worker with traumatised and/or delinquent teenagers. I most likely will not be qualified to give a fitting answer to a therapeutic question. But I just recommend to be patient with them. Yet do not accept anything they say. Usually I start out with questioning certain believes or world views. Literally ask them why they see things the way they do. That way many interesting discussions can build up a therapeutic relationship. Additionally it helps to know your own certain limit. As an example I can question regular drug usage but certainly will react differently if violence is being glorified.

Calling out a teenager directly mostly works if the relationship has been built. There has to be a lot trust on both sides. Both sides shouldn’t fear that the heavy critique will result in a gap.

Also if it isn’t something rather lighthearted humour works wonders.

Maybe you can translate some of it in the therapeutic context.