Description of problem:
Section Configuring an OpenSSH Client/ Configuring ssh-agent with GNOME.
Configuring ssh-agent to start explicitly is not needed, /etc/X11/xinit/xinitrc
does that by default both in RHL 8.0 and current (Feb 10) rawhide.
Version-Release number of selected component (if applicable):
Indeed, you are correct. I removed this step. Thanks for the report.