That's actually quite impressive.
As for the Dline, BYU had a ton of attrition from last season. Other than Uriah, the key players are mostly freshmen and sophomores now (Haws, Mahe, Batty, Nelson, Summers).
Khyiris Tonga (left early for the NFL)
Zac Dawe (left early for the NFL)
Bracken El-Bakri (left early for the NFL)
Seleti Fevaleaki (transfer portal)
Freddy Livai (no longer on roster)