Another possibilty ....that feeds on roots.
Wireworm larve....
https://garden.org/learn/artic...
https://entomology.ca.uky.edu/...
I have moles and voles and I do not recall ever having a daylily end up like that. Slightly shorten some roots, but not every bit of them.
I lean towards wireworms or grubs.
May you be blessed with beautiful blooms this year!