I have a feeling that for several people she's always had that status, it's just that nobody brought it to public attention before this meme started, likely because all of them thought they were the only one who saw her that way and would be looked down upon by everybody else for being attracted to such a beloved childhood character.
Now that all the Kanga-lovers know they aren't alone, her potential milf status has exploded into relevance.

I'm not a furry but I would definitely fuck that kangaroo