Q: What is the most often-overlooked risk in software engineering?
A: Incompetent programmers. There are estimates that the number of programmers needed in the U.S. exceeds 200,000. This is entirely misleading. It is not a quantity problem; we have a quality problem. One bad programmer can easily create two new jobs a year. Hiring more bad programmers will just increase our perceived need for them. If we had more good programmers, and could easily identify them, we would need fewer, not more.
... most software developers will have direct exposure to/experience with one or more such incompetent programmers.
Unfortunately the nature of language combined with personally assigned titles means that there's no point in even trying because, i think, it's impossible. Call yourself whatever you want. I'm still going to need to vet it for myself if i need to hire you.