This is only true if the complexity comes from the underlying problem that must be solved or goal that must be achieved.
Complexity that exists for historical reasons, derived from technology or platform choices, solves a problem you don’t really have or don’t need to have, relates to the structure of the organisation, etc. etc. can of course all be made to go away completely.
In my experience a small fraction of the complexity in most organisations and software is truly, fundamentally unavoidable.
There are always processes. Sometimes they are explicit and well-understood; sometimes they are hidden, and not open to improvement because nobody knows what they are. Implicit processes tend to disadvantage newcomers, as well as reinforcing social assumptions and conventions (that tend to disadvantage those that are already disadvantaged).
Explicit processes don't have to be heavyweight and bureaucratic.
There was a good essay on the problems caused by informal/implicit processes, from about 20 years ago. I've spent 45 minutes searching for it, but I'm afraid I can't find it.