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Since the prevalent opinion on HN appears to be against contracts of adhesion, a request for sources is an expected request when presenting the minority opinion.

Rejecting the offered source with a "tl;dr" complaint is an invalid distraction from that request.

Not to mention, many topics have not been the subject of peer-reviewed research; if you require peer-reviewed research as a necessary condition on you being persuaded about anything, then you are severely limiting the scope of potential debate.