Nobody ever accused Kobe of being unaware or stupid.
He created his own nickname like a cornball.
Kyrie's comments about "mamba mentality" gave even more of a boost to this idea of Kobe as a strategic, clutch performer.
Stories like the OP and this "mamba mentality" are a marketing tool to boost Kobe's brand: Something more important than ever now that he's retired.
And by the way, there's hardly an agreed upon definition of clutch, but this article attempts to create a fair one...and to no ones surprise, there are better players in the clutch than Mamba.
A Statistical Analysis Of Clutch NBA Shooters Since 2000
Perhaps it should be Dirk Determination. Or King James Mentality.