I think good stuff staple piles are the opposite of the intention of the format and that's all most of the decks in those videos are
I don't necessarily lay the blame at Wizards for this trend, though they're part of it. While it's true that when they print obvious, braindead staples into the format, it is ultimately the players who say retarded shit like "I want to make a deck for this commander. I've already spent the $700 to pick up on all the staples for it - I really don't want to pay another $200 for a mana crypt, but I guess I have to. Can anyone help me slot in the 3 non-staple choices for this commander?" that's the player.
Take Cyclonic Rift and Rhystic Study, two blue staples. Study was part of one of the dumbest-designed sets in the game's history, and was a flop in the way the game was played at the time. Rift was a playable tempo card in RTR block, good in limited, but didn't really see a ton of use outside of there as far as I remember. It's obviously much better in this format, which was very nascent at the time. There's no real wizards influence in designing either of these.
And yet a seeming majority of this game's playerbase insists that if you are playing blue, you have to be playing these two. You have to shell out for them, or you deck will never win. Nevermind the literal hundreds of alternatives blue has for card draw or the dozens of other mass-bounce effects that blue has, all of which are worse-but-not-that-much-worse; the format is, apparently, completely unplayable unless you play the best of the best of the best.
And people who think this way also think it's "totally fair" to sit down across from a new player with a precon, because their deck is "still casual" because Wizards doesn't actually moderate the format in any way. EDH is a pubstomper's paradise that no other format allows for.
On the professor, I've never liked his PBS doctor who wannabe gimmick where he explains simple things or reviews trash products from WOTC.
I find when they're driven by a bit of research, they're useful. When he goes over reprint costs for a Masters/Remastered set, or a precon, it's good to have the prices laid out, organized, broken down into a digestible format. It's pretty easy to just look into this myself, but I just throw him on while I'm doing something else to get the overview; the last precon I bought was one of the MoM ones for the planechase cards, before the week-long interest in that format evaporated because "it gets in the way of my turn 3 combo too often."