Yes, you are correct. Someone (don’t know if it was the SEC or NCAA) had a rule for a few years that the home team could be penalized if the crowd noise was “too loud.” I don’t ever recall a penalty being called or enforced, but there were many times where the fans were “warned” that if they didn’t quiet down, the defense would be penalized. The officials would actually hold up the game waiting for the crowd to get quieter - which usually resulted in us getting louder, not quieter. After a few years the powers that be realized the idiocy of the rule and dropped it.