Well I think thats cause on the one hand a supporter might consider " the oil of conversation, the philosophic wine, the ale that is consumed when good fellows get together..." as true while another might consider "the devil's brew, the poison scourge, the bloody monster, that defiles innocence" as true. Depending on ones opinion something is true for one but not true for another. A person might only be able to see their own side of things without allowing other opinions. So I guess fallacy is a somewhat appropriate term here:)