To each his own
All my old Mars work is archived off on DVDs somewhere and I'm not motivated enough to go dig up my study of that image. But the original image, to me, just confirms my interpretation. Without the contrast adjustment that sharpens the edges and wipes out the shades of gray, the blocks (to me) have an obvious 3D appearance.
I'm not against the idea of geysers on Mars, but I think that this is one of the least persuasive of the images purporting to show geysers. I've seen others which seemed to show a plume of vapor and a shadow that matched the sun angle, things like that. One image out of thousands doesn't matter one way or another.