I decided to do a deeper dive, starting back when he was Leach's OL coach at Wazzu. The findings were interesting.
Per
CFBStats com
Washington State without Mason Miller
2016: 29 sacks allowed - 82nd nationally
2017: 44 sacks allowed-- 126th nationally
Washington State with Mason Miller
2018: 13 sacks allowed - 8th nationally
2019: 20 sacks allowed- 28th nationally
Mississippi State with Mason Miller
2020: 34 sacks allowed - 120th nationally
2021: 34 sacks allowed - 97th nationally
2022: 26 sacks allowed - 59th nationally
I'm not sure what happened the first two years at Mississippi State.
Maybe they just had to get the right guys in there. Other than that, his offensive lines have been solid in that category ,all things considered. Then there's also the vast improvement Washington State's o line made from the year before he got there. This dude took over and they had 31 fewer sacks than the year before lol.