As anything else, a blind application of a technique, paradigm, or pattern, could be horrific. It doesn't matter what combination of capital letters is used. I've done horrific things when I was "doing DDD", until I realised how simple and elegant domain models could be when done right. Forcing people to do something they aren't used to and expect decent results is disastrous in any industry. It's just in software everything can be "refactored" so we are more easy-going with those things.

With DDD "done right" there's no issue with understanding what the code does because it's split into tons of files. It's actually the opposite. But, indeed, it could be a nightmare when applied blindly, or forcibly because of some ivory-tower architect decided to "use DDD" without even knowing what it is. I know as I've been that guy.