I have seen a lot of software "engineers" that forget the primary goal of software engineering (solving a business problem) and instead see engineering as the goal itself, building an over-complicated, over-engineered "playground" of microservices to serve a whopping 20 requests/second and requires a full-time DevOps team just to keep the stack running. At that point building the stack appears to be the main purpose and solving the business problem was a "nice to have" side effect.