We will see.
I think you are forgetting that he has had 3 ( I think) different DC and schemes during his college years. He was never allowed to just play, without having to learn everything from the ground up each year.
I see a very good (and fast) rotational guy, that has a really high ceiling. That is about what you get at that point of the draft. I also don't think the current LB's are as bad as you do. With Preston Brown and Rey, I'm happy with the best of the rest starting/ rotating until Burfict is back.
I also think that the plan is to move Williams into the old Taylor Mays role of dropping into the box and playing three Safeties with Bates as the centerfielder.
I am not the only one who liked this pick: the below is from Jesse Reed from Sportsnaut
Bengals: Malik Jefferson, linebacker
One of the most exceptional athletes in this year’s class, Jefferson isn’t the most instinctive linebacker out there. But put him in a spot where he is simply attacking a specific assignment and he’s going to excel. Right off the bat, he’ll likely start in place of Vontaze Burfict, who’s suspended to open the 2018 season. Once Burfict returns, don’t be surprised if Jefferson ends up starting alongside the veteran. The best part of this selection is that Cincinnati was able to land the former Longhorn in Round 3, making him a great value pick.