You're a liar. Lets say they took a 40MP camera (say the Pentax 645D). That camera has a max resolution of 7264 x 5440px. Now we'll imagine that photo being blown up to the size of a SMALL wall, 2m in height, making it XX meters across. That would set the dpi at about 80dpi. Too low.
No digital camera could get close to that size, and the only ones that would be in the running are the Phase One, Leica or Hasselblad. I've used two of those cameras, but none would be accessible to scientists in Antarctica. Maybe Nat Geo.
To print an entire (large) wall you need at least size 120 FILM, but probably 4x5 FILM.
So don't give me lies and 'digital is superior' bullshit. You're welcome to have that argument, but get an education first.
And Ansel has not been 'well and truly outdone' by anyone. His style of photography isn't popular anymore, but show me a single artist who can shoot his style with a portfolio the size of his, and I'll then give you the credit you think you deserve.