BS ...Not really.
The SEC had 10 teams for a long time (ever since Tulane left in 1964, and Ga Tech left in 1966), they have never been able to have a round robin due to having 10 teams (and 12 before 1964). By adding 2 teams (USCe & Arkansas) in 1990 they were allowed to split into 2 divisions (due to a rule passed after they previously had 12 teams) which finally at least the divisions to have round robins.
Please try to do some research before making statements like that.
*note* the time of 10 teams was back before the season was increased to 12 games, and conferences typically had 7 in-conference games due to most conference having 8 teams back then. I'd also like to point out that the Big Ten was at 10 teams during that same time period and lacked a round-robin as well.
There is NO REASON they couldn't have done a round robin as long as they had an even number of teams ...
They do it in Grade school, its really not that complicated.
Whoever the dumbA$$ is that said you couldn't do that because you don't have enough teams, is just that ... thats an antique rule some idiot made up.