The article says the data recorders indicated the brakes were not applied at all but the accelerator pedal was floored. In other words, people thinking they're standing on the brakes when really they're standing on the gas pedal.
A person comfortable with technology will react to a surprising result by immediately changing what he's doing on the controls to search for cause and effect; for those who have difficulty with technology it is because they can't think scientifically and react by trying to do more of what wasn't working.