We can disagree on that. But I did list other common superstition forms to not get bogged on an emotionally charged item; everybody is used to their superstition, and nobody thinks it impairs them. Key point - Egyptians didn't either :)

I actually think "not impaired by superstitious beliefs" is somewhere between "less than 1%" and "zero", myself sadly included. For "severely" we have to set up some definitions and thresholds.