I think its completely valid to look at this and recognize there are issues with the industry that led to there not being a diverse pool of talent to be able to choose from, but also recognize that there currently IS a limited pool and safety of people on set during dangerous work is paramount, and the skin color isnt being used as a costume but as a effects tool to portray the character as possible to not detract from the story being told. IMO i ts pretty different from something like cosplay where people confuse skin color to be part of the 'costume' of a character, they're not trying to have a separate person portray a character, theyre attempting to seamlessly hide that theres even another person in the shot altogether. People here have already mentioned scenarios with little people being used for children, or men/women being used for the opposing gender. I think there are industry issues that lead to a smaller pool than there otherwise could be, but its always going to be a small pool due to the specialist nature of the work. So event with a diverse pool, tight schedules and locations will probably always make this kind occur.
I can definitely see how and why this would be an upsetting image to see, but I think context is key. I haven't really seen any practical solutions to this, outside of, i guess, 'dont do it'. But imo thats not a solution at all, that just leads to POC characters in media being limited in what theyre able to be displayed doing due to a real world lack of available talent at the time of filming.