Hi,
No. Now, when the wishlist system was made, years ago, HikaShop didn't had a guest checkout. It should potentially be possible in the future to support guest wishlists via the guest system in HikaShop, similarly to how the access to the order details page is available to guests after their purchase.
However, most people wanting a guest wishlist system are actually fine with the like plugin which I recommended above (actually, this plugin is better suited in most cases, from what I could understand of feedback on this through the years). So the impetus to work on this has been quite limited.