I wonder how good of a job the staff is doing on evaluating OL talent and/or coaching them up. If you look at top teams they often have underclassmen as starters and backups. This were the rosters at the start of 2021(I realized they were not current after I pulled the data....) I literally just pulled teams of varying reputations and results. Bama had 40% of players 2 years or younger but were had much older players other than those 4.
uga - 2 Sr, 1 Jr, 1 RS Fr, 1 RS Soph, bench = 2 RS Jr, 2 RS Fr, and 1 Fr. So 40% of players that are 2 years or younger,
FSU - 2 Grad transfers, 3 RS Fr. bench = 2 RS Sr, 1 RS Jr, 2 RS Fesh - 50% of players 2 years or younger
VT - 2 RS Jr, 1 RS Sofph, 2 Fr bench = 2 Grad Transfer, 1 Grad, 1 So, 1 Fr - 40% of players 2 years or younger
Cuse - 1 RS Sr, 1 RS Jr, 1 RS So, 1 So, 1 Fr, bench = 1 RS Jr, 1 RS So, 1 So, 2 Fr - 40 % of players 2 years or younger
GT - 2 Grad Transfer, 1 RS Jr, 2 FR bench = 1 Grad transfer, 2 RS Jr, 2 Fr. - 40% of players are 2 yeas or younger
I am sure if you look across a lotf teams many have a similar amount of youth across their lines.
One other thing is that I don't think our OL is as undersized as people think. If you take the average weight of all of the OL on the current roster you are at 310 lbs. I believe our starters this year were around 315.