GMKA was cautious to the level of inaction and the excessive cautiousness meant executing any plan ended up dependent too much on other parties which often led to execution failures--to such an extent one can reasonably question whether a plan even existed in the first place. To your point, GMJK appears to have a plan and is calculated (as opposed to cautious) in the execution, but he pairs the calculated with decisive. I didn't expect FO chanages this quickly, much less openly discussing resolving the three-headed goalie monster as a priority.
It's a really fun dichotomy that's apparent even after only one week of GMJK.