Hey, author of Better Auth here. I created Better Auth because I couldn’t find any other auth library that goes beyond simple login with OAuth. Even then, the only properly maintained ones were NextAuth (Auth.js) and Lucia (which is now deprecated). I’m not sure where the idea of "too many auth libraries" is coming from.

They're probably including libraries tied to hosted offerings, and there are a lot of them (Cognito, Firebase, Auth0, Clerk, FusionAuth, Kinde, Descope, WorkOS, and many many more)

Out of curiosity, how is Better Auth funded?