Blitheness used in a sentence

Blitheness in a sentence as a noun

I'm just surprised at the pass being given to Zoom given the blitheness of their gaffes.

" The Apprentice signifies once and for all the hubris of such blitheness.

But the blitheness with which the article sidesteps the collateral damage that will necessarily come of this brave new era of efficiency and progress -- as if there was nothing more to this story than an unemployed engineer helping out Mom and Pop -- really is quite breathtaking.