When putting two things together: one positive while the other negative, we direct the mind to compare and contrast. This way of presenting information can be helpful as it narrows the audience’s attention to focus on only two aspects. But it has drawbacks as well.
When a complex subject has been reduced to the binary, we lose perspectives of nuances simply because of the limited lens we look through.
Without a helpful parameter, instead of making a point, we get the opposite by creating more confusion and distractions.