Same kinda happens in industry, too.

Intern: 12 shitty slides. No appendix. Mumbles through the entire pres.

Jr/Associate: 47 immaculate slides, full appendix, 30 minutes to present, runs short on time, skips half of them and the audience fell asleep 20 minutes ago.

Senior: 10 slides, good enough but not pretty; too busy being technical for pretty slides. Serves the dessert first because that’s what we’re fuckin’ here for then backs it up with steak. 30 appendix slides and ready for any question including “when is the heat death of the universe?”

Tech lead/director: 100 slides, 2 or 3 at the front called executive summary, agenda, recommendations; 2 more slides to back it up and introduce the team/rest of the presenters, and 95 other slides ready to go for whatever.

CTO: I don’t have slides. I have a spreadsheet. Here we go.