That's really not been my experience when reviewing code. Bad code I've seen has been due to misusing language features, not knowing the principles in these art

That's really not been my experience when reviewing code. Bad code I've seen has been due to misusing language features, not knowing the principles in these articles, or misunderstanding the principles or blanket applying them to everything. For example, abstracting every piece of similar code to make it "DRY" because they don't understand that it's about concepts not code.