If you search for the image online there’s another version that looks a bit more natural. I think this one has been retouched as it’s more crisp with more contrast with a bluer sky. But I can’t be sure because I’m just a caveman.
Look at the different versions. Which do you think is representative of the real oil on canvas?
Man, color in photographs and color on screens can be quite the rabbit hole...
Many consumer screens, especially phones, display colors very differently. Likewise, most cameras (phones, DSLRs, MLIC, etc) will render straight out of the camera JPEGs with various degrees of tweaks (more contrast, saturation, etc).
Take a photo of the same thing with two different cameras and then view the results on two different screens. You'll get a total of four different results.