I think a lot of that is due to a determined astro-turfing effort and I'd say this down voted commenter is a part of that. For genuine questions I think answering people is good, but paid astro-turfers always post genuine sounding questions.
It's a newly created account that followers a standard denier strategy and labels scientists deceptive, the poster then implies there is a conspiracy. This has all the fingerprints of a paid astro-turfer.