First of all, stop cherry picking a single year of a contract to compare. You do know how contracts work, right?
Crawfords average yearly salary over the course of his original 5 year deal was 9mill per. Care to guess what Campbells was? 15mill.
Lets look at some of the top salaries for DE on average per year.
Olivier Vernon 17mill per - 37 Comb Tkls, 6.5 sacks, 701 plays
JPP 15.5 mill per - 68 Comb Tkls, 8.5 sacks, 1011 plays
Calias Campbell 15 mill per, 67 Comb Tkls, 14.5 sacks, 807 plays
Everson Griffen 14.5 mill per, 45 Comb Tkls, 13 sacks, 795 plays
Stephon Tuitt 12 mill per, 25 Comb Tkls, 3 sacks, 571 plays
Akiem Hicks 12 mill per, 54 Comb Tkls, 8.5 sacks, 899 plays
Now some closer to Crawfords
Vinny Curry 9.45 mill per, 42 Comb Tkls, 3 sacks, 578 plays
Derek Wolfe 9.17 mill per, 31 Comb Tkls, 2 sacks, 459 plays
Jerry Hughes 9 mill per, 44 Comb Tkls, 4 sacks, 735 plays
Tyrone Crawford 9 mill per, 27 Comb Tkls, 4 sacks, 630 plays
Cameron Wake 8 mill per, 36 Comb Tkls, 10.5 sacks, 615 plays
So Crawford's numbers are not that far out of alignment with other players getting paid the same. Not to mention, this was his first full year playing DE. As I said before, I think he will be better this year.
Did he light it up? No. But some of the comments here are that he's JAG. Worthless. Doesn't come close to his contract.
Then you have folks like you who try to compare him the Defensive Player of the year, who averages 6 mill per year more.
Why not compare him to Vernon. Or JPP. Or Griffen. Or Hicks. You telling me you'd rather have any of those guys with their contracts over Crawford?