Is this a joke? Canelo moving up to Cruiserweight? He already moved from 168 lbs to 175 lbs, to take on Bivol. But Cruiserweight is fucking 200 lbs (please correct me if I am wrong). That is going to be huge. Can anyone move from 175 lbs to 200 lbs in such short time? Even if he manages to do that, I am sure that boxers such as Arsen Goulamirian or Ilunga Makabu will smash him to pulp and thereby end his career. I don't know who is giving him all these crazy ideas. 168-175 lbs is fine for him. He should stay there.
Shouldn't be a joke if only he managed to beat Dmitry Bivol at the Light HeavyWeight. Nothing wrong with that plan though as long as he knows what he's doing. But prior doing that thing, he should finish and settle the business first against Golovkin next month and probably have a rematch with Bivol at catchweight 175lbs next year before taking into another step.
For me, he should target unifying first the Light Heavyweight titles before he can take on doing some challenges at Cruiserweight. Dmitry Bivol, who holds the WBA Light Heavyweight and Artur Beterbiev, who holds the WBC, IBF and WBP Light Heabyweight are those he needs to take on.
But since "Time Is Gold" for any boxers, maybe there is a mindset that they need to rush things for their goals. However, you are right, a jump from 168 lbs to 200 lbs is somehow risky as that's a new environment to be adopted and adjusted by a boxer. That's a big leap and I don't know if there's a boxer who did that distant weight step.