“ Several programmer friends advised me to learn a new programming language like Python to do everything automatically, but I’m 98% sure that would have taken even longer – and introduced numerous additional errors into the results. I did plenty of programming in my youth, and I know my limitations.”

This screams stubbornness and a lack of willingness to push past a small barrier to me. Maybe unwarranted, but that also makes me less willing to accept his ideas. Who knows what evidence, lead, etc. was met with the same laziness?