That isn't really true though. Just for this upcoming year you have:
Florida playing Utah and FSU. Tennessee playing UVA and UTSA. Kentucky playing UL. Missouri playing Kansas State. South Carolina playing UNC and Clemson. Vandy playing Wake Forest. UGA playing GT and was supposed to play OU until the SEC made them cancel the series. In the west Bama is playing Texas, Arkansas is playing BYU, Auburn is playing Cal, LSU is playing FSU, Miss St is playing Arizona, Ole Miss is playing Tulane and GT and A&M is playing Miami. Every team has at least one P5 team, some two and some against good G5 teams. Nothing wrong with these schedules.