Incompetent engineers are rare because you can't really fake it in engineering.
Not in Murica, they're like blades of grass here.
Eventually they drift into other fields, like selling real estate, but they leave a wake of destruction in their path that destroys companies. I speak from the viewpoint of 20+ years in the american auto industry.
I've heard they like being assets in financial firms as well. Apparently their meme stands.