agnos.is Forums

You're only thinking of public use cases. For personal use, as I'm sure most people self-hosting would be using it for, it's very convenient.
I use it for work for typing long urls into a new computer we don't yet have remote management of yet. At home, it makes it really easy to type any link with a TV remote or controller.

LLDAP + Authelia

I actually moved from Authentik to Authelia because it was easier for me to add a couple of lines to a yaml than to navigate Authentik's web ui. Authentik is more feature-full but I'm only running SSO for myself and a couple of others at home.