Ive gone through english primary and secondary, and in aus ive done year 12, tafe for 2 courses and currently in uni. And from my experience, powerpoint dont make or break a lecturer/teacher. Its how well they can get the students interested in the subject, no matter how mundane it may be. Maths at tafe, lecturer was engaging, made the content relatable where possible, and knew how to teach different people. Same maths at uni, boring as hell and the lecturer doesnt know how to make it engaging. Sure, he writes on a board, but that means nothing if he cant explain it well.
every single time i see a new video in my subscreptions i'm like: "yay! a new video" and then eddie teaches something basic and just when it feels like he's about to hit the complicated stuff it cuts off and im sad :(