I think the gnarlier part is that it reveals how much (and how error prone) initialization code is. When objects start glued together in the right structure a lot becomes magically easier to deal with.

I'm considering this for my language but it's a lot more complex to implement (especially with today's ecosystems) and I keep wondering if it's worth it.

Imagine inheriting not your colleague’s code, but his entire machine. Then you discover this machine also is the production environment.