Are you wrong often or is it just here?
I'd guess that a good percentage of the members of this site who have more than a dozen or so snakes, have hets that carry visual identifiable regularly seen markers that are an indication of the trait they carry.
Maybe you can't tell hets from normals and I'm not saying that all hets have markers, but your statement is wrong. There are some who can, some that do, and the proof is in the babies.
Perhaps idiots was not the best word to use.