You’re right, unfortunately it is pretty standard, and I found it to be a massive waste of my time. I was the person on the data team prepping those appendix slides. Before meetings, I talked with key stakeholders to make sure I had created charts that would answer potential questions. Instead of working on strategic projects, I was herding cats and formatting charts. A lot of times I was just doing riffs off the same table or query.

This is of course for larger readouts and companies. At smaller companies & for non-critical presentations, I didn’t even have time to create appendix slides. So instead my audience ended up with a backlog of questions that would never be answered.