The other day I asked for an analysis or at least an UML diagram since we are having quite some troubles and my boss looked disgusted at me for asking such a question. I’m not a professional backend developer, so I don’t know how it works professionally
Seems kinda weird to me. It’s completely legit to ask for documentation before making it yourself. Some people are just more visual and need to see diagrams - they certainly help me.
That being said, I haven’t used formal UML in twenty five of professional development. I mostly use class diagrams and flow diagrams. Could be he was reacting to something that he feels is more academic and less practical.