Don't be sorry. It's a football forum. Hilarity is what we do.
You can have a coach that signs 9 defensive tackles, and keeps 2 on the roster, for one thing. A lot of the guys Charlie recruited really liked him, but weren't all that hot at playing football. When Herman demanded they work, they packed up.
No one's actually sympathetic toward the Texas roster, and I'm not asking them to be. Just as thought experiment, though, remove the top 5 defensive backs from Baylor's roster, and then see how you'd game plan a defense.
College football can't prevent roster turnover. It's built into the description, and with the portal and other rules, it's only going to increase. The best programs, though, feature a lot of coaching stability. That's one thing Texas lacked over the last decade. To hear Texas fans tell it, we really should just dig the whole thing up, plant marigolds, and forget we ever even tried to play football. I'm suggesting there are both internal and external factors for why things aren't championship caliber right now, but there's decent chance it will be quickly.