THis is what I always thought.
More people remember the Superfriends Cartoon than the 60's Filmation cartoon which had Aqualad and Mera.
Almost nobody remembers that cartoon (or the Flash, Hawkman and GL toons that were also features then for that matter) but Filmation fans
and DC heads of a (cough) certain age.
My...um older brother told me about them. That is my story and I'm sticking to it.
Superfriends may have helped make Aquaman a joke, but that is better than the pop cultural non entity that was Hawkman
(who didn't show up on Superfriends until later).