I'll hold my hand up to owning a leopard print blouse with a pussycat bow and I also have chiffon scarf - I love both of them, but you've got to be careful with animal print as you're right it can look really dated and I'd say a bit ridiculous. In my opinion it looks wrong on knitwear full stop. I think a middle aged, or older woman should wear it with caution, an accent scarf can look great - but jumpsuits, dresses, handbags and God forbid, leggings aren't gonna make you look edgy, just desparate!
I'm not for one minute saying that people of a certain age should have to wear drab colours, but looking at those jumpers, especially the bright pink/blue and the orange . It would make anyone of any age look eccentric!