Well, honestly I'm not all too sure why. Should it be considered a BAD thing when you're a Jason Taylor clone? I think Jason has done pretty well for himself.
He had 70 tackles this year, including 20 for a loss of 104 yards, he had 10 sacks, 21 quarterback pressures, 4 pass breakups...and he's got all the athleticism in the world on a 6'6" frame.
Once the scouts get comfortable with using him in the same role that Miami uses Jason Taylor, that's when you'll see his stock climb again IMO. They'll have him work a little bit at LB to increase his stock this week, I'd bet on it. And, it is good to keep in mind that he is NOT getting dominated so far in practices...he's been very good.