It's pretty clear to me that modern mumbling smarmy sarcasm is the low culture, and the Shakespearian trained actors of the past are high culture.
It's just like with fashion. We may pretend that hoodies and patagonia vests are just as respectable as a 20th century suit, but if we see two photos side by side we deep down know who is better dressed.
Except that's not what I'm talking about. And neither were you. Again did you watch the video?
Both of the actors you refer to talk in a certain British accent. It's not "Shakespearean" in any way; and that specific accent doesn't work outside of any of those contexts of playing high class British people or older "wise" professor types. Patrick and Ian, though both very good actors, have very limited range and their accents do sound comical outside of relevant contexts.
It's just like with fashion. We may pretend that hoodies and patagonia vests are just as respectable as a 20th century suit, but if we see two photos side by side we deep down know who is better dressed.