It matters when profession A and profession B are as related as data science / data engineering / software engineering. I'm not arguing that there's no distinc

It matters when profession A and profession B are as related as data science / data engineering / software engineering. I'm not arguing that there's no distinction between the fields, just that people who excel in one can usually do a passable job working in the others. Or rather, you have to have passable skills in the other fields to excel at your chosen field.