This is just disingenuous BS.
Yeah, there is a stark difference between 1906 (when the first photo was taken) and the second photo.
It's not because of "modern" advancements though. The large building in the first photo with the Owl Cigars billboard is the Diamond Building.
It was torn down in 1915, less than 10 years after this photo was taken.
All the buildings in the photo were gone by the mid-1950s.
That's the real take-away: Most of these stark changes happened some 70 years ago during the post-war industrial boom, not in any recent time.