Stating such a definitive thing on an unknown is sheer ignorance. Keep living in your world man.
Sheer ignorance is acting like you know all the answers, and getting testy when you think someone just might disagree with you. That's on you, man.
For openers, rookies aren't usually top producers their first year. It takes a year to learn the game, and how they fit into the team's concepts.
Next, Chenal is the 4th ranked linebacker. Personally, I think he may be as good as Micah Parsons was, coming into the league, and could be listed as the best. His grade this past year was phenomenal against the run, and he can get to the passer when asked. Also, has that sideline to sideline skill the Packers need. He's projected as an early to middle 2nd round pick, not in the first. Would I take him late in the first if I was the Packers? It depends on who's out there at WR. If there's a can't miss pass catcher, I gotta go with him.
That said, I wouldn't be at all displeased if the Packers traded up to the middle of round 2 to get Chenal if he's still available. My personal belief is that he has a lot of the same attributes as the Watts brothers. Leo plays the game from sideline to sideline, and has an enormous downhill game in the pass rush. He could simply be the #1 sleeper in the draft. The question is, are you willing to bet on him, going early?
But, the facts are that the Wisconsin linebackers are a valuable commodity coming out. Even guys who played sparingly, not actually starters, are making it in the NFL. Wisconsin - in my opinion - is Linebacker and Running Back University. They keep churning them out, and they're damned good. Leo could be one of the better ones.
Now, why do I see a WR early in the draft for the Packers? Need. Right now, the Packers have Adams, and he may well be gone. You need to come up with someone who can hang onto the ball, and runs patterns properly. Adams does, the rest? Iffy-iffy! Some try to catch the ball like they're wearing boxing gloves.
Two WRs I like are Drake London and Garrett Wilson. I believe London could be a play maker immediately, and Wilson by mid-season.
So, anyway, my comments weren't just off the cuff, they were based on observations, watching clips on various players, and trying not to get to personally attached to any players, other than the skills I see translated into the NFL.
Of course, all this could change, by the time the combine ends, as I know you'd agree.