Authors share many places: Amazon or bookstore links, newsletter signup, events, interviews, and socials. A cluttered link tool softens the focus on the book.
A simple link in bio page for authors should read like a short jacket flap: name, one line, then the links that sell or support the work.
Use 1kb.bio for that. Keep branding off with Pro if you want the page to feel like yours alone. Readers get clarity; you get one URL for every bio field.
See a sample author link in bio page — with a profile photo and the same simple layout you get on 1kb.bio.