The 1000 slightly different versions of Webex that are all bundeled under the same brand are its biggest drawback.
My university uses it as well, and the normal latest version of Webex is on par with Zoom. However for some courses the lecutrers use e.g. Webex Training which is barely usable garbage (but is the only version that has built-in quiz features).
My company uses webex since years and quizz is now built into the Webex Meetings app as they bought slido. I agree though that Webex Training, Webex Support, and some very old webex versions are just terrible.
My university uses it as well, and the normal latest version of Webex is on par with Zoom. However for some courses the lecutrers use e.g. Webex Training which is barely usable garbage (but is the only version that has built-in quiz features).