Facebook does (or at least used to when I left it a few years ago) this too. They give you a huge dump of your data and photos, with an html file to help you navigate it better.
To offer a differing experience, I've been working in Angular for a couple of years now and personally like it quite a bit. I don't like frontend frameworks in general, but given the choice I prefer Angular over React.
Bob and Brad ("the two most famous physical therapists on the internet") are an absolute treasure. Always good to see them get some appreciation online.
Where I studied, every classroom had a blackboard and a projector, with the rollable white screen just above the board. When you show slides, roll out the screen. When you need the board, either use the portion beside the screen or roll up the screen if you don't need it at all.