The majority are spam and rage baiting but a large enough amount to be concerning seem to be simply middle of the road opinions by otherwise fairly normal users who have strayed to far from the group in terms of some combination of tone or politics.
For those, we have a vouch button. But a dead comment doesn't send anyone to jail, so I agree that it causes less harm to hide a few harmless comments than to let everyone see some of the vile nonsense and/or blatant spam that gets flagged or hellbanned.
"Bret Devereaux" sounds more like of French origin, but if the author self-identifies as jew, this is useful meta-information, even if expressed in terms that are culturally unacceptable in US.