Some yes, some were made with Photoshop apparently.

This for example had its comments changed to
CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 90
And obviously its not a photo.

https://lh5.googleusercontent.com/SBW-W_0HMkMMSzL_ggeijzapN1DOV2_vGO5MIKt0ecgH=w1600-h1200-no

Could someone make a quick check? download the image and check what’s in its comments.