Why do you call it "software engineering"? Do they try to follow SEMAT? SWEBOK? If not then they probably are just software hackers and do not deserve to be called software engineers. A real software engineer is someone who follows rigourous engineering processes, does not reinvent the wheel and who does their work by applying the lessons of those who have gone before. It requires mental discipline to do this, in particular because you have to resist the urge to reinvent the wheel.

Reinventing the wheel is great fun. Without constraints you can appear to be amazingly productive. But it is all a fantasy because without constraints and a rigorous process you are probably piling up technical debt faster than anything else.