The previously "painted" images are screenshots and CG images as the source indicates before they got reuploadded with no filenames that gave away the hoax. You can see the original post and the modifications here.
(note "Screen%20Shot%202017-06-11%20at%207.48.20%20PM.png" and "FullSizeRender-1.jpg"
Also, the general "painting" pattern is too homogeneous there's absolute lack of pressure differences that characterize a REAL painting away from a computer generated one.
Great detective work
The artistic style was too perfect to be human... Those cases come once in a century... And we are still admiring Picasso.
Very true