Since you asked, I'd say you're probably being downvoted because the fact that the creator is Jewish is irrelevant to the comment you replied to. OP was having a balanced discussion about the ethics of providing review products whereas your comment declares the creator a scammer without any explanation or supporting evidence.

IMO I don't think religion, even if its "super-duper" is really on topic in a discussion about the quality and ethics of Amazon reviews. I hope this doesn't come off as critical, I'm just trying to explain where your donvoters may be coming from.