The Lakers are paying 32.5 million a year for a guy that puts up 11pts/12rebs a game. His rim protection and defense is above average, but not elite. He also has had trouble staying healthy.
If you gave me a choice between Kessler, Time Lord and Mitchell Robinson... Kessler would be my 3rd choice before I even considered the difference in cost, but now imagine that you have to pay 3 times as much per year for Kessler AND give up two unprotected 1st round picks and the insanity of the deal really emerges.