Your quote" The portal has some kids who will never play again, but it also has hundreds of P4 recruits, who were incredible athletes, who understand they'll never see the field at their current school, and mid-major players who overachieved and are looking to improve their competition level."
Overachieved? That's suggesting that the players aren't that good, but they just played better than they are. Believe me there are plenty of Mid-Major players who are better than some P4 players. Hell there are a whole lot of D2 and D3 players that are better than some D1 players. It doesn't mean they
overachieve, maybe it means that they chose a place that is or was a better fit for them for playing time, quality education, location. etc. Not to mention its possible these players never got valued the way they should have been for whatever reason. P4 and D1's in general are certainly not perfect with recruiting. There are so many people that are on D1 rosters that are certainly not D1 talent.