I am sensing the OP might have some affiliation with the FO, because this is the one thing on TBD everyone seems to agree with (that Kelsay sucks)....except the OP. And the OP has made MULTIPLE threads about it.
Furthermore, the OP's premise is flawed. If everyone sucks, you don't extend ANYBODY. Especially if you're giving moeny away that could be spent on a talented free agent.
Plus, this move doesn't make any sense. Kelsay is not good. He wasn't good as a DE and he's WORSE as an OLB. He is horrible in coverage and opposing offenses find it easy to create a mismatch. The point of this game is to limit mismatches, not extend them for 4 years AND overpay them in the process.