William Hartnell, Patrick Troughton, Jon Pertwee and Peter Capaldi are fairly old-looking gentlemen who led the show.
Save for Davison, prior to 2005 all Doctor actors were 40 or older. Millennials seem to believe that the Doctor can't look or be older than 35 or something, which is weird. Maybe that's scaring Chibnall off? He's pretty much tried to cut'n'paste the feel of Smith and Tennant for Whitaker because fans were never getting enough of those eras, but then actually be bold and daring with the more original and engaging Martin - something he should have done from the outset but nobody can plan ingenious ideas on cue.
So the comparison would be apt, if the show had never had an elderly-looking person ever before. Martin's casting as the first female black Doctor was royally wasted in a stunt casting, in a part he admited was never going to be the Doctor until late in the writing process anyway.
Hopefully Chibnall is throwing out fake messages to keep elements of surprise in play. A spinoff series or having TTC be semi-truth and it's revealed Ruth is a future incarnation, or 6B...
Beyond the inherent argument of mine being that the Timeless Children implication being of no importance to me personally (and I say importance and not something a lot less polite), I also argued that the Martin Doctor being a 2.5 Doctor is inherently more interesting, since its not intent on reversing simple facts from the show's history, like how the Doctor's TARDIS wasn't stuck in the Police Box form until he was the First Doctor, and so forth. That I ignore the, er, revelations of that finale episode is not an argument to call me out on, since I'm aware of it enough but also intent with it not becoming the focal point of another pointless discussion of canon.
Chibnall's arc and story may not be complete yet. Then again, he underplayed everything with the holiday special while keeping it a direct continuation. Maybe he really doesn't know what he's doing, to the point it all makes Moffat's mistakes comparatively coherent.

It's a wait'n'see...
...but to throw out a Doctor as stunt casting is atrocious. Especially given the strength of the Fugitive Doctor alone. Heck, having her be the next Doctor but as a ruse would have been better, plus that would fix a giant plot hole in the Judoon story where the future incarnation saves the past incarnation - something any fan of the show would have recognized in 'The Two Doctors" and while nobody is ever on the same level as Holmes, it's just proof that even Holmes had an off-day and he had to do a hasty rewrite because they had to change filming locations and a lot of tangential dialogue as a result.
That and Jo's outfit was easily NuWHO's best and most original outfit for a Doctor. Chibnall's responsible for what worked well as well as the clunky stuff.
I would not be for it, for two reasons. Which I have explained, among them being not a fan of Martin being a pre-Hartnell Doctor. At all. But I think I explained myself there. Second, a pre-Doctor would not fit with the inherent going-forward agenda that characterizes the show. And lastly, if there's any unseen Doctor adventures the BBC could follow, I'd rather those were Paul McGann's, quite frankly.
Season 6B may be corny, but it fits the whole of the show a heck of a lot better, and still allows a lot of originality and expanded lore. As well as legitimizing it that much more. Either way, Whitaker's era isn't done with yet and anything could happen. Or what's been shown is simply that. I hope not because, again, Moffat's multi-season arcs were a mess but that would be nothing if Chibnall doesn't tidy things up. Never mind the wasted opportunity of the Fugitive Doctor, who - putting aside Timeless Children's claims - was an amazing breath of fresh air in "Fugitive" along with a great use of the Judoon.
Also, the idea of Chibnall staying on the show depresses me as a fan. But what depresses me more is, after being fairly civil in my discourse that there's an attempt (?) to label me within a group of "some people" that basically whine and bitch about Who without arguing in civil manner. I'm not here to insult Chibnall's Who, but at the same time "some people" should also learn to accept that people like myself simply don't like his (lets say controversial) stance and handling of the show, and accept that that won't change at least anytime soon. Being superior about it helps no one, especially when the end result is being not so.
