I've met such newly appointed architects myself - judging by the commit history, they were OK writing unmantainable spaghetti for 10 years, then they read a few books on patterns, got promoted to architects and started applying those patterns everywhere (ending up with unmaintainable overengineered abstractions). When arguing during architecture reviews, you'd often hear "but in book X it's written that..." like they don't have their own opinion. Fortunately, they all outgrew this phase and eventually became proper architects.