My theory is that, as an industry, we have almost completely lost (or maybe dilluted?) the ability to architect complex systems. Everything is 90% third-party libraries and microservices duct-taped together without much thought. Virtually every project I joined was missing an overarching design document. Where it existed, it was usually not updated in the entire lifespan of a system. Asks to estabilish a domain or a versioned API boundary around something particularly gnarly are usually met with blank stares or violent opposition.

It's weird because I'm not even that old, and this kind of planning or refactoring was definitely a part of the curriculum at my definitely-not-Ivy-League uni.