You can ask commenter(s) who are making unproductive comments to rephrase their comment(s) and express themselves in a friendlier or less confrontational tone.
FWIW, in a discussion about bias, discrimination and/​or oppression, if this is done to a member of a marginalized group, this might be perceived as racist/​sexist/​etc. tone policing, and could make the discussion go worse.
FWIW, in a discussion about bias, discrimination and/​or oppression, if this is done to a member of a marginalized group, this might be perceived as racist/​sexist/​etc. tone policing, and could make the discussion go worse.