You’re spot on. Using technical arguments to refute common misconceptions rarely helps people overcome their initial feeling about them.
Maybe showing them pictures like this would help
Women telephone switchboard operators – a vintage circa 1914 photo
I work in the tech sector so I can’t help but have strong feelings against this line of thought. Articles like this one really tell the story
IT job market recovering faster than after dot-com bubble burst
I remember when certifications in Novell NetWare were all the rage. A NetWare certification won’t do much good in a job interview now.
IT workers are the single greatest refutation of the job-killing automation argument I can think of.