The voice sounds oddly familiar.
3:55:07 - the similarities to 10/Tennant are interesting, but the show was treated as superficial long before Whittaker got the role. Hello, sonic screwdriver (and other things, noting that the sonic screwdriver was destroyed in1982 due to perceived overuse and misuse... and yet some fans think JNT would have loved the modern era? Well, who knows-- either way, we will never really know as such...)
If it helps, canonical and other changes (dumb or otherwise) started long before Whittaker's era:
While Diamanda is focusing on one story, various previous modern era episodes' ideas - ultimately disused or otherwise - are also peppered in. Then again, ideas pulled, discarded, or otherwise going big for canonical changes have examples going back to the 1970s*, if not even the 1960s** and it's the footnotes that help bring me back from this wonderful digression. I don't recall if that one involves Clara splintering like Scaroth to influence all the Doctors and time and space in even more small universe faff. Can't blame Chibnall for that, thankfully... but Diamanda does mention one discarded idea for Nine that I too am thankful for.
While I can't spend 5 hours writing this reply, noting that it takes much longer to create a 5-hour video, it's suffice to say that any show can be made the way the makers want in terms of characters, visual panache, backing music, story quality, etc, etc. If viewers like it, that's the only goal, no matter if they're catered to or if the show is made solely by what the production team wants and hoping people put their butts in chairs to gawk at it.
I also disagree with Jay on pre-Hartnell Doctors. Ironically, established continuity and confirmation by the producer of "The Brain of Morbius" both outright confirm pre-Hartnell. Yes, a couple of stories prior to "Morbius" do say "the first" or "the earliest', but given how big The Division was, there could be a lot more to the mindwipe that was mentioned as reason for the Doctor not knowing a bigger past. It's not like the show flaffed up its own continuity before 2020 or anything*, **, not to mention "time can be rewritten" so it's not inconceivable that an origin story can be done to death and still feel oddly original, if done right and feels compelling. (For Chibnall's intended epic, moving the galactic goalposts to another dimension as to where the Doctor allegedly came from doesn't feel like convincing re-mystification of the character, though. But pre-Hartnell? Nowhere near as canonically bendystretchy.)
* Some examples include the change of heart quantity from one to two, regeneration limit being introduced, regeneration process altered (from a function requiring the TARDIS, to being an independently/solely biological one), Atlantis having another type of destruction*** that didn't match up or work with the time it was mentioned in 1966, Cybermen retconned into total robot creatures, second console room that wasn't older until a few seconds later said that it was (despite looking less utilitarian with a sheer lack of controls), Daleks retconned into total robot creatures, etc, etc
** 1969's sixth season closes with a possible series finale by bookending the show by revealing the Doctor's home planet, which invariably had to change the Doctor's motivations from leaving his home planet (in terms of Hartnell's incarnation wanting to return, but Troughton's adamantly not wanting to.) Not to mention, "The Sensorites" uniquely shows both the Doctor and Su-- oh wait, only Susan had powers of telepathy in this one, not the Doctor. Now have fun using headcanon to explain into how she was either rescued/effectively adopted from another planet and she was using the term "grandfather" as a term of endearment (like "professor" 25 years later by Ace, ¡Qué suerte!), or a long-dormant gene reactivated in solely Susan with this ability for all that generic nuclear family stuff that any ol' show can do. Being sci-fi, I'll still embrace the former for having more interesting narrative complexity.
*** arguably twice
Bonus fun (but it's not 5 hours long):
