I don't think those guys were thinking portal for the NIL. They may be looking for playing time. Big money in the NIL is for less than 10 % of the players. The vast majority of portal players don't get NIL. They find whatever level of college football gets them the opportunity to play. I get it. You may want to be part of the Huskers, but four years of grinding it out on the bench can make the thought of playing regularly at a Group of 5 look pretty appealing.
I don't like when players transfer, but I 100 understand their desire to go somewhere where they can play.
It's part of the reason why Devine Ozigbo is one of my favorite Huskers. Dude came in as like a 2* with, I think, no P4 offers. Started out like 6th string and just kept grinding and working his way up the depth chart. Due to necessity, he started a couple games, was benched, went back to 2nd or 3rd string and just stuck with it. By his senior year, Frost's 1st year, he won the #1 RB spot and held onto it the rest of the season. Never publically complained, never publically talked about transferring, just kept grinding. His best run of his career was against Illinois...just as a refresher...
The run I am referencing is at ~29 second point of the video.