The VAST majority were not. Being a 5th year senior gives you a ridiculous advantage as a collegiate athlete. Does it mean they won't pan out? No. Nobody is saying that.
Just that it adds a degree of difficulty to their scouting.
Not really, either they are good or they aren’t. The vast majority of redshirt sophomores, juniors, and seniors aren’t good NFL players either.
As I mentioned in my initial response. With the transfer rule changes, NIL, and Covid seasons. Any sort of pattern you may have thought was there no longer will exist in the same fashion going forward with the significant changes in college football in rules in recent years. As there are likely going to be way more of these players staying longer in college.
There are just so many recent examples of 5th year seniors doing well that I’d be shocked if scouts even really give it much thought at this point. Could see maybe at RB where the shelf life is so short, but outside of that it’s not going to sway my opinion of a guy like Tre Harris at all.