So there may have bern updates. Granted, the artist has to make something disgusting into a sexy monster. There are some pretty gross things. As far as i know, there are more onoskelis rule34 than succubus. Just gotta be willing to dig a bit. I'm afraid I forgot his tumblr name, but I do remember he makes tons of 3D art like this.
Taliyah. Age: 27.
So I guess the reason behind the style makes sense.
Veda. Age: 24.
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It's simply people with different tastes than you and I. The inaccurate exaggerated portions and added on or taken away body parts are very annoying. I'm not against people that likes such styles, but is not my cup of tea. Might still be on deviantart.