I've run colorization like this against historic photographs and it had a very real impact on me - I found myself able to imagine life when the photo or video was taken much more easily when it was no longer in black and white.
The issue I have is that the examples appear to be color images that were converted to black and white. In other words, they are modern images with plenty of images acquired in color for training. Converting an archival shot from early 20th century is totally different. Totally lowers credibility in my eyes
Here's an example I really enjoyed, of a snowball fight in 1896: https://twitter.com/JoaquimCampa/status/1311391615425093634