This is apparently called "Skywhale" and the title is accurate (although it's worth clarifying that "this year" refers to 2013, which is when the original Imgur post was made.)
A quote from the Wikipedia page:
Wings didn't make sense to Patricia; the creature was too big and the technical limitations of balloon design wouldn't allow them anyway. So she took a cue from the balloon itself, and imagined that the creature might somehow secrete a lighter than air gas. In the place of wings she imagined huge udders that might contain the gas, as well as a huge bulbous body. She imagined the creature with a slightly more human face, with a calm benign expression that would inspire empathy rather than fear. Her aim was to create a being that was massive and wondrous and that exists somewhere between the impossible and the unlikely.
I agree. The concept is simple, and it's not perfect, but it isn't dumb either. This is basically recreating how coal and oil got in the ground in the first place. Plants absorbed carbon from the air as they grew, then they got buried in a way that prevented them from decomposing and re-releasing it into the atmosphere. My main question here would be whether burying it only 10 feet under ground is really enough for long term storage. The other big elephant in the room with carbon capture is that it can be a convenient excuse for companies to avoid doing work towards actually decarbonizing their operations. If, as the article suggests, this is used primarily by industries like cement making that don't currently have a way to become carbon neutral then it's a good thing. If it's just used as cynical green washing by companies who could be doing better, then it's at best a wash, and arguably a net negative.