Defensive linemen in the NCAA portal do gather attention from schools. For a guy like Jimari, I remember he was a developmental recruit coming out of HS. He was a basketball player who gave football a shot and got a scholarship. He rode the bench for several years as he learned how to play football, taking up a scholarship slot and not contributing on the field. Now LSU has him for his senior year. He's a grown man with experience playing Big 10 football. He'd probably be a NFL free agent if he went pro. At LSU, if he's not a starter (and I don't know their depth chart) he'll be in their rotation. You need depth in the DL.
Princewill and Williams are similar. They're experienced players. They'll come into their new college not as raw high school prospects but as older players who've played in big time college football games.
Going forward, we need to stop this trend of developing players and letting them leave.