Getting back to the subject at hand, let's be precise. Rabbit poop does have an oval shape which, I suppose, can be interpreted as "egg-shaped." Nonetheless, rabbit poop, just like any poop, is simply disgusting, and there's nothing healthy in some people's obsession over it.
For reference, here is a link to a picture of rabbit poop (I do not post the image since, as I already mentioned, rabbit poop is as disgusting as poop of any other creature):
https://encrypted-tbn0.gstatic.com/i...I4Au82aSyUCbvI