A hand with four fingers and other artifacts: an analysis of the posters for the new `Fantastic Four`

Marvel revealed them on February 4, and immediately debates started online. They took on a serious scale, which led the company to even deny the allegations.

Viewers suspected that the movie posters were created using artificial intelligence. Someone has four fingers on a hand, identical faces appear in a crowd, and a child in the background has one leg. These seem like typical neural network artifacts.
Poster for the movie 'Fantastic Four'
Poster for the movie 'Fantastic Four', showing two women with the same faces and a hand with four fingers
However, not everyone is convinced that AI is responsible. A Reddit user named "DKoala" notes that the artifacts are just poor Photoshop work:
While I agree that AI was likely used in creating the posters, the repetition of faces isn't a sign of that. AI can't replicate images so precisely. It's probably sloppy cut-and-paste work.
DKoala
Users explain the four fingers by saying one is simply hidden behind a flag. Others think AI might have been used partially, for example, to generate some elements that were later refined manually. Identical faces could result from copy-pasting in an editor, not the work of a neural network. Our editorial team even saw a potential reference to the movie's title in the scene with the fingers.

Marvel officially denies everything. A studio representative told "The Wrap" that no AI was used, and that's all. No explanations for these oddities followed.
Poster for the movie 'Fantastic Four'
Poster for the movie 'Fantastic Four', showing a girl in the background with one leg
However, viewers are not quick to take his word for it. The same "DKoala" writes: They deny it was generated by artificial intelligence. I still have doubts, but I would like to believe them.

Others, like the user "Equal_Respond971", believe the blame lies entirely with the artists who worked on the poster:
The only complaint is that the artist and editor missed these details.
Equal_Respond971
In general, AI is everywhere now, and avoiding its influence is difficult. We at zoomboola.com understand that it helps save time and money. But many find it strange that a large company like Marvel resorts to such methods.
Trailer for the movie 'Fantastic Four'
The main question from the dissatisfied is: couldn't the job have been entrusted solely to a photographer-director?