Yes it is a confusing time and a few random thoughts:
Transfer Portal: seems like you can literally start a season at one school and finish at a different one under the right circumstances. Maybe some coaches waiting for the dominoes to fall and keep a spot open until the last moment.
Extra eligibility due to COVID I think has a profound impact right now and will take a couple of seasons to filter out of the system.
Graduate Transfers: Personally I have always like this rule because under normal circumstances it is the only eligibility rule that rewards a good student.
Influx of proven foreign athletes, especially from the British Commonwealth it seems like of late.
"Artificial Times"- Athletes not being able to replicate times from big invitational meets like Arcadia. For example if a kid can run 8:55 in a big invitational meet, but can't break 9:10 anywhere else including their state meet. College conference, regional, and national championships don't typically run like these set up races and coaches are looking for racers. I've heard at least one power 5 coach express this.