It’s the fact that she’s cutting through red tape that’s the problem. What if the building she put together doesn’t have rebar in the concrete where it’s supposed to? Or if the plumbing is put together in a way where in 5 years a contractor is going to have to tear out an entire wall to fix something because she doesn’t know how plumbers lay out their pipes? The playground collapse is the immediate worse case scenario for this type of sloppiness but usually problems like that don’t become apparent within a day. The construction manager was right. “Built by a teenage superhero” doesn’t mean anything to construction inspectors whose entire job is to make sure buildings are safe for many years to come.