I resent a little bit.
I'm a boiler-maker / welder by trade (metal fabrication). My trade certificate actually says "Engineering Tradesperson". I operate a laser cutter, and have written scripts to automate some of my computer related tasks, and have a rudimentary understanding of Python. I've also worked at an ISP in NetOps doing physical security and infrastructure.
I live in Australia so I can only speak for the system we have here: trade school is formal education, the on-campus component of trade education is delivered throughout the nation by TAFE[1] campuses. We are formally educated to build things that don't kill people, and can certainly be held responsible if our actions or omission of action leads to injury. We are expected to escalate anything we see on workshop drawings that could be problematic. Each of the tradesmen in our workshops are required to perform a weld test every six months, which is examined using ultrasound techniques, to ensure our work meets or exceeds AS1554[2]
While us tradespeople aren't the ones engineering the bridges, we are the ones building them.
Comparatively, the software development discipline is still in it's infancy, whereas the construction trades have been around for millennia. Structural Engineers and tradespeople build physical structures to withstand Category 5 cyclones, but my bank (in the top 10 globally by market cap) can hardly have a month go by where some software system doesn't fail.
The advent of bootcamps is probably a side effect of 'coding' becoming relatively easy compared to it's more esoteric history, with the advent of high-level languages like Python and Ruby. Or maybe that stuff about the average IQ increasing over time is correct, and more people have the capacity to understand writing code. Probably both.
Another comment here spoke about TDD - Test Driven Development, that's probably closer to the physical engineering disciplines with destructive testing of random batches of building materials.
1. https://en.wikipedia.org/wiki/Technical_and_further_educatio...
2. https://infostore.saiglobal.com/store/PreviewDoc.aspx?saleIt...