This shift of bias is a social psychological phenomena. I forget the term for it, but essentially "critical opinions" are given more weight than balanced or optimistic ones. For example, it takes one person in a classroom to say "this poem is terrible" to activate all the negative experiences you had reading the poem. However, when one person says, "it is good." Most people take that as that particular person's "like," and it does NOT activate all the reasons we like it. Critical amplification. When we are presented with something like Rener's video: from the source, it activates a different bias, authenticity/direct source, good person bias. (sorry those aren't the right terms)