The rosters are now expanded to 105 possible scholarship players, and passing enough of the currently returning 7 LB's (10 total including the true freshmen) on the roster to get that much playing time seems like a bigger feat than even what those 2 did. Especially with the primary defensive alignment being a 2 LB set.
In 2022 when Carter got on the field for a good part of the season from what I saw on that roster there were 6 scholarship LB's, with only 1 being in his 3rd+ year. Sutherland. There was only 1 future high level LB in that group, Jacobs, who was a true Soph. So as good as Carter was, he had a pretty easy road to playing time given his talent, with PSU playing 3 LB's mostly.
In 2023, with Jacobs as a true Junior it looks like there were 9 LB's on the roster, but in addition to the opening day starters who I believe were K.King, Jacobs, and Carter, the rest of the LB talent were freshmen in Wylie (RS Fr), Robinson (Fr) and Keys (Fr). So other than Elsdon backing up at Mike there was a big need for another LB to break out into playig time to back up either the Will or Sam LB spots.
Where as in 2025 PSU is only playing 2 LB's and basically has 3 starting LB's in Rojas, DeLuka and Campbell, with also Wylie in his 4th season at PSU and Nelson in his 3rd year after being a backup in 2024. As well as Speca who earned snaps as a true freshman and who has been given very positive reviews by the coaches making a full 2.5 depth chart for a 2 LB set that a true freshman would have to overcome to be in a position to burn their redshirt primarily on LB play. So I believe Arrington will have to earn his playing time, earn burning his redshirt, primarily on special teams. But if he does, he likely will get a few snaps in any game that allows it.