Even highly trained software engineers can barely get security correct. What makes this journalist think somebody with a few years of high school programming can do any better?
I'm not sure I buy the "blue collar coder" prediction. At least not in the US. That type of work is currently outsourced to India and parts of Eastern Europe. There's an entire industry of code factories that already exists - are these US-based blue-collar coders going to be any more effective than off-shoring?
And within the US, code already permeates other professional roles. Staff accountants and data analysts do lightweight (and sometimes heavyweight) programming in Excel and other business tools. And hobbyists program things like home automation in Lua.