the most important part is that he sourced them . most people will not go into each photo and look at the copie rights condition . or why should they . in his case it in another language . so I can't say and I or anyone would not no if he got permission . that would not be indicated in any article just that it was source . the 1st thing that would happen is a warning from "cheetah" . That did not happen .
The big thing is to source not only photos but all possible copyright items .
This is not the venue to discuss this